While we're on the subject, does anyone else think the classification "death/doom" is largely misapplied?
In that most of them play more like Candlemass but with the chug of speed metal and growls from death metal?
Yes.
However, I think that "doom metal" is a bit of a misnomer itself. It's really just any genre of metal played slowly and made gloomier. Doom seems to be more defined through a spirit (often defeatist) and tempo than the other genres, which have their own spirit
as well as differences in musical technique.
But doom metal generally sucks due to its pity-romanticising defeatism, which is far less directive or constructive than anything else in metal. At least when Burzum's weeping on Filosofem he's implicitly hailing another age.