Well regardless of whether you think that Asians caused COVID-19 or not, you will have to take it up with Simon Cowell and not us as we are just fans of America's Got Talent and are not affiliated in any way with the show outside of just being randos who think the show is good. It was HIS choice to allow Asians and Asian-Americans to participate on his television show, not ours.
It would arguably be even more racist if Simon just outright banned Asians or Asian-Americans from participating on his show, especially with the tremendous track record that Asians have had on the show.
I would highly recommend to July that they curb their thoughts about Asians and Asian-Americans or else you will get banned. Just talk about the acts you DO like and not the acts you DON'T like. I do not like getting confrontational with people, so consider this a warning.
Just because you can say something, does not mean that should say something.