Until something better comes along its good. We always have this thread popping up, so it's one of the more consistent parts of the struggle, and that should tell you something, that it's captured part of the discourse, as well as social attention.
That's to say its been effective in obstructing the far right, triggering them and showing that lefties Can come together and throw down. Can antifa tactics evolve in the coming decade? hopefully but if not something will have to take its place.
Sure the right hates it, but they're not america. no body of research has been compiled which measures antifas demographic support.
Its mostly a spectacle. It's a small minority of the pop struggling with another small minority of the pop which gives it that hysterical media vibe. The bulk of antifa praxis is just research and doxxing.
Im sceptical of horizontal structures, spontaneity, anarchism, black blocs, but I still give it my solidarity. Though what I'd really love is a red front 2.0 which fills in for where antifa tactics fall short. Hard to see what that would look like today tho.