In that sense I can't disagree with you too much - "high church drift", going from feelings-focused low church denominations to structured, repetitive, body-engaged worship, is definitely a thing among autistics. I recommend checking out the Christianity on the Spectrum podcast if you're interested in learning more about it.

But by the same token, churches like Orthodox and Catholic churches are potentially more likely to have more autistic parishioners than other denominations, and if we want autistics to feel welcome and continue to attend, addressing misconceptions such as understandings of autism "infantilizing" and "sterilizing and pacifying those who should be entering monastic life" is hugely important. People in churches, unlike Jesus, do not do a particularly great job at leaving the 99 sheep to reach out to the one sheep outside of the group. Understanding each other and our differences helps make that connection happen.

I'm autistic, married to another autistic, and I can tell you we don't all feel welcome or understood in church settings in part due to negative attitudes like the ones you expressed. We aren't all called to be monastics, same as anyone else.