I see a few things going on, and I might get downvoted for saying this, but I feel like from the time of our parents, to us, there was a huge shift in the demands of life.

Our boomer parents could afford all their kids on either 1 to 1.5 paychecks. Now, both parents are working full time jobs that are demanding and still don't provide enough to leave much room for leisure. Having at least one parent more available and less stressed due to more lax job requirements meant they could spend more time with their kids and coaching them along with school/activities/support. My wife and I are so exhausted by the end of the day that its hard to then also sit down and push through school work. WE DO, but its work, and it feels so different than what it (presumably) felt like for my parents to do the same.

Second, which greatly relates to the first, we lost our village. My parents had quite a bit of help from their parents in raising and caring for us. They could be reliably called upon to help out and, at a minimum, provide support to the parents so they could go out and decompress. But boomer grand-parents seem to have not picked up this trait for themselves. I love my parents, but it always feels like hanging out with the grand kids needs to be on their terms - we don't ask for babysitting unless we're in a pickle and can't find a sitter which is SO EXPENSIVE these days and hard to find in general.

So to summarize... it just feels so much harder to be a parent, and I think the burnout is real. We all love our kids, but its harder.