Plenty of autistic people experience actual disability. And masking isn't just "what everyone does at work". Masking is a trauma response. Autistic people in genral have been abused for their 'abnormal' behavior to the point of being so traumatized that masking is not even a choice. They must hide for fear of further abuse and harassment.
Abuse such as "everyone's a little autistic" and "that's not a disability" or "you just want attention"
Making passing judgements on someone's disability that you clearly don't understand makes you a bigoted asshole. Stop it.