I do think you’re getting a bit of a hard time here @Moreroardinosaur!
Everyone’s circumstances are everyone’s kids are completely different and handle things differently - as @Shmurtle has pointed out.
I had my first night away this year. DS is 5.5yo. My best friend has a child the same age who spends one night a week as his grandparents and has since he was about 2 months old, and she has a night away every month with friends and leaves her DS with DH too. I don’t believe there’s anything wrong with either of our approaches - they’re just different 🤷🏻♀️
I have a fantastic DH, but he works away for weeks at a time (regularly - not a once in a while thing) and we have no other family nearby. So naturally, DS is far more attached to me when it comes to wanting comfort. When he’s home DH always did his fair share of night wakes etc when DS was younger but it was 10x harder and longer for him to resettle DS than it was for me. I could easily have gone and left them for the night - DH was absolutely capable of parenting, but honestly, I’d just have spent the night thinking about the fact they were likely having a rough night rather than actually enjoying myself, so what’s the point? 🤷🏻♀️
DH also has sleep apnea and uses a CPAP now (since DS was about 1.5yo) and quite honestly, it’s like trying to wake the dead if you need him in the night 🫠 He genuinely does NOT hear DS if he wakes up - and not just in a “oh, she’ll deal with it” kind of way - he physically needs to be shaken awake. So part of me has always felt unable to leave when DS was younger due to that too. DH would absolutely get up and deal with the night wake or whatever the issue was, but had to be shaken awake by me first.
Everyone’s circumstances are different. Personally, @Moreroardinosaur in your situation, I would work on DH being able to find his way to settle the kids. It will absolutely mean less sleep for you all for a while but I do think it’s good for kids to be able to settle away from the main caregiver. It definitely took a while for DH and DS to figure out their system due to DS relying so much on me for comfort when DH was away but after a little while he was happy being comforted by DH.