Well, yes, they are doing that.
So if we were on this thread all whooping for joy and saying, "Woohoo, well done that lady! You tell that horribly * where to go! I wish she actually had punched him!" that would be the equivalent of what they are doing.
We aren't doing that.
I said I don't care about this incident, and I don't. Not because I support people who randomly abuse trans people in restaurants, but because as others have pointed out, there isn't a woman, gay person or ethnic minority on earth who hasn't experienced far worse than this at some point in their life. It's a very run of the mill fact of life for just about everyone except privileged white males.
When trans activists stop literally assaulting women who are just trying to speak out about women's rights, when there are no more male prisoners in women's prisons, when trans people are campaigning for third spaces and their own sporting competitions so they won't be encroaching on women's, when female rape survivors can access single sex support without being called bigots, when "progressive" politicians have stopped calling women bigots and dinosaurs and "TERDs" simply for wanting to have their own spaces and not have to share them with any male who demands access, maybe then I will have the emotional bandwidth to care about a trans person being verbally abused by a mad old lady in a restaurant on a completely different continent.