Yeah I could very well be mischaracterizing ST's fandom. Like I said, I barely know anything about the group beyond one song, their aesthetic, and some of the drumming highlights (thanks Drumeo). However, OP's post smacked so very neatly of older complaints that Tool is over hyped and Bad, Actually™️, that I felt secure in conflating the two.
Totally agreed that there is an element of musician snobbery in Tool's fandom, but I'd be shocked if that's not also present in Sleep Token's world. Like I've said, I've got a very limited pallette to draw from, and maybe The Summoning is nonreprestentative of their usual sound, but I don't see how a band which produces that track doesn't attract the same type of fan that can't make it through a Tool song without mentioning the Fibonacci sequence (I say that with love, I'm often that fan despite my best efforts).