stuff made for the floor is not IDM
That's a pretty hideous way to describe non dancefloor music. And it doesn't hold up. No one's going to call Oneohtrix, oOoOO, or Dabyre IDM. well, unless they're a fucking idiot.
It's always been a bastard, unwanted term. And it's now a relic one - it's only theoretical value might be as a shorthand way of describing a temporary mid 90s (to mid 00s) movement in electronic music, where programming dexterity and abstraction took precedence over dance function. Abstraction in both aesthetics, melody and structure.. familiar song structures were more often than not abandoned, a lot of melodies were intentionally non melodic.
Basically the shit on early warp records and early planet mu.
But all of those things were existing before rave, a lot of 50s & 60s electronic stuff was exactly the above. No one retrospectively calls that IDM - for good reason. So idk why we are hanging on to it, futurespectively.
The word doesn't even make sense semantically. Some terms are just turds, badly coined, little illuminative value.