I think they play disharmoniously and incorrectly.

Well, no matter what, you won't understand that this is the whole point)))

Even Rammstein can't compare.

They play different things... Rammstein is generally a bad example; they aren't even a standard for their style...

For Slipknot fans! I can recommend the band "Meshuggah", which plays at the same level, and in some ways even heavier than Slipknot... Their style is Progressive / Thrash / Math Metal (but only the later one). Although, you might not like the style; it's very extreme, but it won't hurt to know about it for general development...

Yes... I don't remember if it was you or someone else in the music thread who called their music "Stupid banging." Just so you know, this "Stupid banging" is much harder to play...

Still, you need to call Hardcore, Hardcore... Because I can also call speed metal (death metal) just "scratching" on the guitar...