Dave is an acquired taste for sure. Though his 90s stuff is actually (shall I dare say) borderline fantastic. Youthanasia album is probably his best vocally.
As some one who can impersonate Dave (due to having the same kind of vocals lol), this is pretty accurate compared to what I do. Good stuff here for anyone interested in doing a Megadeth tribute band
The main reason to learn it is because his voice is very unique and you use muscles and styles you’d never use otherwise which can be used in your every day singing It’s more about the way you do it than actually doing it