Honestly, I do feel kids with younger parents are very lucky and blessed in many ways, that kids of older parents aren't.
They will likely (statistically speaking, not based on individual dubious Super Granny Who Could Outrun A Cheetah in her 90s anecdotes) be blessed for the rest of their life and even their own parenthood (parents as grandparents!), in a way the children of older parents will not.
Obviously there are other factors like parents' finances, personality, etc, but belonging in an active, healthy and loving extended family unit brings richness and completion to adulthood. Not to mention sans the stressors of being an early carer essentially.
I don't think accepting that is shaming (though I understand why older parents get very defensive). I think it's just a helpless observation in the face of societal structures that are pushing parenthood to an unsustainably old age (e.g. such that many older parents will NEVER get to meet their primary aged grandkids).
For example, I generally think it's better for kids' wellbeing to have more financially OK parents, but that's obviously not a personal condemnation of poorer parents at all!