My dd was told aged 16 that she couldn’t be given a dx of asd as she likes music and can travel to college
, and in the same breath was told “however, I have no doubt that if you’d been in the system aged 6 or 7 you would have been given a dx” 
Her younger sister already had a dx. It was the dx process that made me realise older dd was actually autistic and not just stubborn, awkward, headstrong, demanding etc
I didn’t have the strength to fight anymore and just accepted what they said. I wish I could turn back the clock. Dd is now early 20’s, still struggles, but she can’t see the point of seeking dx again. I see how it would help her (work, hospitals etc) but we just amble along.
OP - as others have said - you won’t receive a dx unless every aspect of criteria is met. So your dc will only be dx if they actually have asd. A dx is not given lightly. If there’s background/history of abuse in whatever form it actually makes the process much more vigorous.
I personally don’t like the things/beliefs you’re posting, you sound judgemental, naive, superior and so much more.