Worried about other Forum

I was thinking of joining a new forum  run by autistics apparently. I was really worried when I saw the admin of the site posting nasty comments about American people. 

Im American and autistic so it bothered me greatly that an admin of an autistic forum would say this. I do understand that America has started some really negative info about cures etc but does that mean that American folk are backwards? I’m autistic but now I realise I’m considered as backwards too. :(