Exactly. They are Lousy hosts and your DH is being spineless on this one.
If my DC complained about my food I can't imagine forcing them to eat it.
We often do the bases and they add their own toppings, they love it.
How would PILs like it if you insisted on which toppings they could have? It would be a different matter if they actually knew how to cook!
i had a pizza recently in a so called pizza restaurant with oven etc and it wasn't cooked through .... it was literally raw dough on one side . Horrible and as DH knows, I never turn down food so it must have been bad. I've also had some where the veg on top was raw... Also unpleasant... I feel for you on the food basis alone
Also. you mentioned passata? So they just used something like tinned or bottled passata... and that's it? They know nothing.
but the In laws.. are another matter again.
If DH won't speak up, you have nothing to lose by speaking up yourself. Trying not to rock the boat further isn't getting you anywhere.
I'd be saying, could you please reheat this... and I'd actually bring my own toppings ((olives and basil leaves ) which don't even need cooking and calmly put them on.
Push back.. every time. Say calmly in a civil tone "I wouldn't dream of mocking you for your pineapple and blood sausage toppings (or whatever), so please stop making such a fuss over a plain pizza. I'm not asking you to eat it.!" Smile merrily and don't give a second damn about what they think.
They need to know that you wont meekly accept every rude thing they say or you make yourself an easy target, they can kick without any come back, they will think they have a free rein to carry on doing it.
Polite calm push back. contradicting what they say or just saying "How rude, are you feeling OK?" calls attention to what they are doing and will make them think twice. From this and your other post I think you have nothing to lose. Plus if they start kicking off... let them... let your DH see it... remain calm. I used to keep a spare set of car keys in my bag so that I could make an exit if things got more unbearable than usual. I never used them, but it gave me so much confidence that I could if I needed to.
they are bullies.