Same. Despite plenty of signs, my parents refused to accept that I could even be slightly autistic (due to the stigma of it I guess?) and that my obvious ADHD needed any sort of treatment other than being pulled out of school, isolated at home, and not allowed to eat TONS of things.
I now have to deal with pretty bad social anxiety and a lot of trouble having vocal conversations with people I am not extremely comfortable with. Sure, I would have likely struggled with these things anyway, but I'd probably be a lot more comfortable socializing if I had been able to learn and grow among my peers during my developmental years.
Justifying the murder of someone by dehumanizing them is exactly what the nazis did. It's what Israel is doing in Gaza, etc., calling everyone Hamas and dehumanizing them. Nazis may be terrible people who need to be fought against and whose ideology needs to be stopped, but it's never good to start dehumanizing groups of people over any criteria. All that said I love playing Wolfenstein and Indiana Jones games and killing hordes of nazis.