An argument can be made for non-inclusive classrooms and education model. I can see both sides of this issue .

This probably isn't a great place to complain about having to accommodate autistic learners or to recruit help getting diagnosed autistic kids kicked out of your classroom for being an inconvenience to you. Please google autism and aggression, or autism and elopement. The things you're saying "aren't on the spectrum" are precisely autistic traits. It sounds like your district needs more resources to help these kids be successful in your classroom. Try approaching the child/family with a modicum of respect and interest in what would help that kid feel calm and safe enough to engage with the materials. Actually listen to them, even if something sounds ridiculous or you personally don't see "the point." Tell the families you see a need for more resources and ask how you can collaborate to get them, then actually follow through. Teachers who are willing to listen and attend to their most difficult students are the real heroes who can make such a powerful impact on those students and their families. Unfortunately, punitive and dismissive ones can leave lifelong scars.