Hasan is a slightly-left-of-AOC streamer doing the "we can push them left" thing, where the "them" is imperialist social democrats/left liberals. The place at which his followers arrive is, "I will only reluctantly vote for Kamala Harris" and, "I wish I could vote for AOC 2028". He occasionally arrives aa socialist positions and language like a toddler finding a new toy. He learns the toy, plays with it for a while, talks about it on stream, and then discards it. He wants to be on the edge of mainstream. Can't let the toy get in the way of that.
This is only good and useful in the same fashion that Bernie could be thought of as useful: some will be inspired by the toy, the appeal of possibility and pointing to (mostly) correct culprits of oppression, and then their disappointment at nothing changing may help radicalize. But many, probably the vast majority, will be led back to the Democratic party and liberalism, as Hasan neither offers them an onramp himself nor points anyone to next steps. He just returns to stream about electoral politics, Trump, the next elections, etc. And his audience follows him there.
Hasan should be considered situationally useful. We should be there to pick up the disaffected, as he is not pointing them to us. And doing it through our organizations. If we are not, then he is not part of any pipeline to developing more socialists, but just creating more Bernie-adjascent electoralists that sit at home and will be susceptible to most propaganda.