I’m sorry if this was mentioned before but 314 comments is a lot to read. I’ve seen valid points from both sides. No one should be told how they have to play a game as open ended as WoW. The fault lies neither with Blizzard, nor the player base.
Just my suggestion, but in dungeon finder an option for speed running groups should be added, or alternativly, and option for a more relaxed group. You can also create a group for options like this, but it would seem that adding the option to the dungeon finder would make it easier to find.