Because I’m really lazy right now, here’s some stuff on communities that may be of interest to you.
Take it from a guy in his 50’s who has played wow with gals in their 70’s… if you need to communicate in combat “proper english = dead you” because while you’re trying to type out a sentence the bad guys are going to continue beating on you and you simply don’t have time to type. That predilection for abbreviation bleeds over into every other chat communication. You do pick it up eventually. Try investing in headphones with a microphone and download discord voice chat. It’s free and nearly every guild uses it. Communicating (properly) is sooo much easier when you don’t have to type.
I don’t have as much play time in wow as Nok, Jakjak, Keres and others but my perspective is this:
Most players see levels 1-119 as a stepping stone to 120 where the “real game is at”. You’ll still have people leveling new low level characters and they may even run dungeons with 1-2 other members from their guild but usually this is a ad hoc “pick up game” situation and rarely as a planned event.