I think that your wording is still horrendous.
One thing is autism that is in genes and other is behavioral/adaptational etc. change.
I can assure you that diet had no impact on my anxiety that I have with my autism, where in stressful situations I have severe communication issues with other people with all rhe "classic autism" symptoms, while in very relaxed environment you will have a hard time to define me as autistic at all - where my adhd(undiagnosed) would crawl out...
What realy upsets is how some autistic people are defining themselves an their place in society. I had less issues wit NT people - almost always the people that tried to impose on me some rules were people with diagnosed/undiagnosed spectrum - the worst damage I have seen to others also have been from autistic people as with NTs you can mirror, but with peolle on spectrum - it is a nightmare.