They do, but they don't; if that makes sense? The lows change, but the articulation is dramatically improved. In stoner/doom genres where fuzz and flats are so popular, crisp attack isn't popular. It is more about old school tones. Most multi scales I have heard are decidedly not that.
Right tool for the job, right.
I think the next step will multi scale basses with slight more relaxed preamps. Something that can tame those highs just a little, but give the player a B that doesn't rattle all over the place.