Remathilis
Legend
I agree. And to me, it's a magic trick. The NPC mage or druid or spy is supposed to invoke the feel of a wizard, druid or rogue without necessarily needing uncanny dodge or arcane recovery. The NPC stats are pretending to represent a member of that class without being mechanically the same.Also: Have a much smaller stat block. One of the consequences of "no empty levels" design is that direct one-to-one PC class conversions fill up with a plethora of abilities that most NPCs are unlikely to ever use. 1e/2e characters were much simpler.
Nevertheless, there are usually presumed to be populations of PC classes out in the various D&D game worlds. There are numerous references to them throughout pretty much every adventure or setting book. It's just that approximations like the Archmage or Evoker or Warlock of the Fiend are used to represent them. It IS necessary to keep these stat blocks more or less congruent and consistent with (some of the) PC abilities for that representation to function.
Then there are some (like noble or performer) that don't really represent a class and are just people. I don't think the guard stat block represents a fighter at any level. Just a guard.
The thing is, nobody says "hey! Telenicus the Merciless isn't a real wizard, he's just an archmage!" The illusion is that the archmage is filling that role of wizard even if he doesn't have real spell slots or a spell book. It requires suspension of disbelief, which you'd think would be easy in silly elf game, but apparently is in shorter supply than I knew.