That sounds SO hard @Vie8126. He's doing her no favours at all.
I'd have been livid about the headphones. It's just not ok. Clearly not ok. If he wants to loan her headphones; he can use his own!
I get the 'being controlling' accusation too. But actually what he is complaining about is me having boundaries or refusing to be controlled. What he doesn't like is the feeling of being torn between what I ask of him (and he knows it's perfectly reasonable for me to be asking it; if he didn't live in divorced dad world EOW, he'd think nothing of telling a child not to interrupt him when he's speaking to someone) and his fear and guilt based pandering to his children. He calls it 'being controlling', but it's not at all. I am allowed to have boundaries, expectations and, yes, even some control over my own home and what happens in it. He doesn't get to abandon our consensus and norms just because he fears he'll upset his children.
With food, it's actually that HE is being controlling. He wants me to do all the work: planning, shopping, cooking, clearing up (because he's too busy with work). But he can't accept that, if I am cooking, then I will do it my way. I do consider the people I'm cooking for, but the SC's wants and demands are only one consideration. They already get much more of my headspace, thinking: will they eat this? Is it worth the hassle of serving this? And so on? And they both have form for turning their noses up at or being awful about meals made specifically to their taste (and no one else's).
I do not want our unborn dc to be treated like this however I doubt he will I can see him being pushed out when dsd is here. Or put in danger for fear of actually disciplining dsd. Dp said well baby has to have a dummy said no he doesn't well dsd said she wants to give it to him said okay well last time I checked were the parents not dsd so we will see his like well what's the harm in giving him a dummy.
This is ridiculous. Why on Earth does he think a 5 year old should make baby care decisions? 🙄
It sounds like you very much would benefit from counselling now, before the baby is here. You will end up resentful beyond anything you can imagine if the behaviour (his and his daughter's) continues when the baby is here. I guarantee that you will be much less tolerant of the screens at tables, temper tantrums and insistence on junk at all times when you have a weaning baby you're trying to teach basic eating behaviours. And when the baby's Christmas and birthdays are being ruined by your SD's tantrums (and the baby's father's unwillingness to do anything about it). You have been able to explain things to your older children, or you've all been on team WTF together without saying anything. But toddlers copy and don't understand.
I know that I was surprised at quite how visceral my reaction to my husband's unwillingness to support me or consider the baby if it meant having to parent his older children in any acceptable way. All your maternal protectiveness, plus the feeling of there being no safe space or support anywhere because your husband and the baby's father is actively hostile to you - either directly or by allowing his children to do unacceptable things - just become overwhelming. It's very hard for a relationship to recover from the kinds of letting you down a guilt divorced dad is capable of.
But... even beyond this. I found myself absolutely livid about things for the SC. SD is incapable of anything not being all about her. And she doesn't listen or do as she's told. The same is true of SS to be fair. But on his birthday his father just allowed his sister to behave dreadfully. She was taking over and would have opened all his presents for him (he's 4; he neither needs nor wants her help) if I hadn't intervened. She wouldn't let him play with his toys. She kept telling him that she's so much better than him because she can ride a bike but he can't (he got a bike for his birthday).
I kept taking her aside and quietly asking her to let SS open his own presents. She kept ignoring it. Her father just ignored the behaviour. I was so angry. He was undermining me and making me the bad guy because he is too scared of upsetting his daughter by telling her that it's not her birthday. I was so busy tiptoeing around it all because I knew he'd be annoyed at ME for telling SD off. Thing is, if she'd been my daughter behaving like that - and especially ignoring me correcting her - I'd have properly disciplined her. She would not have been sitting there taking over, ruining things for her brother and being mean to him.
When they left to go back to their mum's, she even told him that 'it'll be much better at mammy's. She'll make sure it's the kind of cake I want' (because SS chose his own cake, and I didn't let SD force him into getting what she wanted instead). Her father didn't say anything to her - not in the supermarket where we were buying the cake, not when she threw a tantrum when we had the cake, not when she said this. She's 7 (not 2)! 🙄
I can't trust him to parent vaguely acceptably at the moment. When it comes to the baby, I still am no able to (for example) send SD to her room til she was ready to behave acceptably and apologise for her behaviour. But my husband claims that I'm excluding his children and being abusive towards them by just withdrawing myself and the baby. He needs to accept that it's an either/or. He either steps up and parents his older children (he will agree basic principles of what is and is not acceptable, and disciplinary strategies - but then he doesn't follow through because of x, y and a excuse) or he keeps them separate from everyone else. He's choosing to make them tangential to family life because he is too lazy, fearful and ineffective to firmly step in and stop a 4 year old scaring a small baby on purpose.