This is one of the weirder contemporary "anti-woke" takes. For one thing, that which is performative can easily also be genuine, and quite arguably if one feels genuine about something then one ought to perform it, hopefully in a way that makes it attractive to other people.

But on the subject of whether things are genuine or not, I see lots of actual, cash on the table, give money, mutual aid in these communities. I could understand performance as being artificial, but if someone is dropping cash to help a person out of a bad situation, that seems a pretty good definition of authentic to me.

In any case, "it's performative" simply does not imply it is not also real.