Anarchism

I think they are more likely to be a fash imo. They are trying to normalize a reactionary and far right texts. Fascists love to use the Unabomber to normalize reactionary ideology in leftist circles. And they always do that shit of trying to separate art from the artist like what the commentor is doing

Edit: Check their profile, they are conservative. Their username is occultist. They like the Unabomber Manifesto. The dude is a fascist not a fed.