Disturbing scenes from Astroworld have seen claims emerge the concert was a "blood sacrifice" as the rapper's promotional material features demonic imagery.
There's a weird thing happening here between all these modern rappers writing songs about being depressed and having no future as the planet burns, which is feeding into this kind of satanic imagery, i.e. the world is going to hell, so my concert is gonna be set up like hell, which in turn is feeding Qanon and Qanon adjacent nutjobs trying to start a new witch hunt and satanic panic (not to mention an entire simultaneous cottage industry of trolls pretending to be doing this).
He's not really part of the Cosmic Right thing though, I think "intellectual dark web" is what he falls under, how legit that is or is not depends on who you ask.
I mean, he's completely mental but I don't think he goes around calling for exorcisms... although he does collect and surround himself with Soviet memorabilia in his house to remind himself of the "evils of history" or something, so he's clearly adjacent.