Well that's exactly the argument of those who say the Prime universe has been established at this time period - we absolutely should have laughing Vulcanians, UESPA and laser pistols. And Klingons in boot polish and Ming the Merciless mustaches.After so much time as seeing the new aproach does that really seem possible if we want to accept this as prime universe? Wouldn't that sort of like if we went back to calling the Vulcans the Vulcanions's or Starfleet went back to being UESPHA?
Sensibly, the production team decided not to be slaves to the minutiae of a 50 year old show but instead use it as inspiration.