If your whole group dies on mass pulls while levelling, especially in 70-76 bracket, you probably are the problem, not the tank. I’ve been maining healers for around 10 years now and this expansion I have not had a single group wipe in those mass pulls. If you are struggling, you should probably switch over to Follower dungeons.
I welcome mass pull tanks <3
Yours truly,
Shaman Healer