How do you get so fucking absorbed into the causes of autism and yet have never even met autistic people? Even kid who are level 3 can usually learn to potty train so long as they don’t have physical impairments or learning disabilities that prevent it. It’s hard as hell, I’m sure, when they are completely non-verbal/non-communicative, have sensory issues, and struggle with routine change, and maybe not every level 3 kid gets there. But that’s certainly not the case for the majority of autistic people.