And what you wrote here is exactly why
Might be true for some, but when I was really into the game back in Legion I had so much fun pugging mythic+. I have had more than 1000 mythic+ pugs, most in Legion, and I felt that pugging was amazing.
Pugging in WoW for me was never as fun as it was in Legion and m+. The sheer fact that you could and can log a character and start progressing within minutes is kinda great, friends and enemies(pun) alike.