How are you coming to 80%? Maybe in your experience, it’s 80% and maybe in my experience is 20%. The point is that wall-to-wall pulling in a random group of normal, heroic, and even in some low + dungeons where there is not one word of communication is a toxic, selfish, inconsiderate chaotic s-show.
It’s not the meta, for the majority of players, It’s only the meta for the small percentage of players that watch the MDI’s and play in the higher difficulties of m+.
Also, just because in your experience it’s been played this way doesn’t mean it’s right either.
And I do tank. I play all the classes and gear up 13 each season to the champion gear level. I’ve also been playing since shortly after the games release and tanking, dps’ing, and healing the entire time.
I don’t have problems by not pulling 36 mobs from the entrance to the boss. I did do it once in a follower dungeon and the 4 followers died, a couple of them died more than once. When I tank, I make common sense proximity pulls using Method Raid Tools or watching a YT vid or after I’m comfortable I might make up my own grouping based on the type of tank I’m playing. Sometimes I go slower and sometimes faster depending on the makeup of the group and the level of the dungeon. But I always try to be considerate of someone else’s time and that counts for all 5 players. The safest path to making both groups happy with little to no time difference is pulling 3 packs of 12 instead of 36 all at once at the difficulty level that most play at, which is normal, heroic, and lower +.