It’s also true that DH hasn’t changed and I have, but to be fair I don’t think It’s unusual to completely reset your priorities after having kids.
It wasn't a criticism, it was an observation. It's not unusual, unfair or unreasonable to reset priorities after having DC.
You can get a situation where one person stagnates, while the other grows up and outgrows them.
You can get a situation where both people grow, but they're growing apart, not together.
Successful marriage takes effort, communication, compromise. If one or both is focused solely on what's best for them, mentally effectively acting single, then it's easy to drift apart without realising.
Sometimes the gulf can be bridged and they can come back together and sometimes not. It requires both people to be prepared to change.
If one person won't even have a conversation where they ask the other one for XYZ, due to ABC perceived barriers (that may not be actually there in reality), that's a mindset problem.
If the other won't even have a conversation, listen, consider compromises and acknowledge something isn't working out for their partner meaning things need to change, that's an attitude problem.
From what you've written on this thread I'm not seeing a DH with an attitude problem, I'm seeing an OP with a negative mindset problem. The pair of you need to talk, if you can't do that, get therapy for your negative mindset so you can start asking for what you want/need. If a conversation with DH goes badly and he's stubborn, inconsiderate and refusing to compromise, then come back and I'll happily give you a LTB 😉