Real Madrid and Barca also have created a negative atmosphere for their players and still won and performed so it's more then possible.
Also just to be clear Arsenal fans are not abusing players every minute of every game. As I said above their is scrutiny for sure but the actual moments like the xhaka one are rare and that came about with exceptional circumstances and in part because of his own petulance.
I think you keep mistaking the awful online abuse that is rampant in the world with the pressure to perform that comes with being in elite sport and a massive fan base. Some of the players we have are not good enough and can't seem to be able to perform with that pressure. Having a silent stadium won't change that add demonstrated by the fact that they've turned in bad performances in this period. Xhaka and Mustafa et Al would be as good as they are right now because that is their level that's pretty much it. Just like Auba shows that even in an awful team he is able to deliver.