The ultimate irony is that if you buy into the idea of hiding your power level^TM^ or the pipeline^TM^, then you pretty much need people shitting on Hasan for being a lib. Otherwise, people are going to wonder why every single vaguely communisty person and org seem to support this dude who is totally not a commie. Imagine if every single vaguely socialisty org from CPUSA to PSL to ACP all pat Hasan on the back going "he's our guy." Normal people are going to start asking reasonable questions like "is Hasan a communist?" And just like how some dude going, "I'm not a fascist. I have never said anything remotely fascist" is completely unconvincing if every single fascist loser likes the dude, no one is going to buy Hasan going "I just want free healthcare, bruh" if every single person who wants more than free healthcare gives him the thumbs up.
This is assuming you believe in the pipeline^TM^. If you don't, you can shit on Hasan for having garbage politics lol
To add to what you've originally said, pipelines only work if average people can't connect the two ends of the pipeline. There's a reason why the opening end of the fascist pipeline is Andrew Tate and Nick Fuentes instead of some blue eyes blonde hair Odin-worshipping freak named Olaf Henriksen. Tate being a brown Muslim and Fuentes being a (gay?) Latino is why they're at one end of the pipeline while the Olaf Henriksens are at the other end. The Olaf Henriksens shitting on Tate and Fuentes for being [racial slurs] who are ruining white nationalism because they're [racial slurs] play their part since normal people are going to be more easily fooled by the Tates and Fuentes going, "If you think I'm a white supremacist, you should read what actual white nationalists like Olaf Henriksen say about me. I'm just a normal guy like you who can't stand the wokes and the [trans slur] and I wanna do something about it. Will you join me?"