Its a community that loves to shoot itself in the foot then ask why there’s a hole there.
Just look at how many posts consist of “I’m the best and everyone else is stupid” just worded around M+ participation by people who then play M+ again with a bunch of randoms expecting everything to magically be better.
Well yes, but common sense would dictate that people only report things that are reportable 
Every m+ thread becomes a contest of “who has done the most / knows the most about m+” a shame really, as if people actually stuck to the topic at hand rather than bullying the poster because they don’t have 5000 raider IO, might cause positive change.
As it is Blizzard will rightfully write off the thread, rather than read 200 pages of nonsense about what keys are high and low.
We don’t want any tanks that can’t even go fast in normal and heroic dungeons. We are better off without them. Also, normal and heroic dungeons clearly are no place to learn. You rush to the end as fast as possible in them. They are a place for gigantic pulls and general chaos.
Imagine actually doing a dungeon. Nah, gotta save those microseconds.
Awesome game, trash players.
You can play dungeons at any pace or with any playstyle you want. You just can’t do it in public normal and heroic dungeons with 4 complete strangers. The 4 strangers don’t care about your request for a slower tempo, just as much as you don’t care for their request for a faster tempo.
Can also just say “Then form a party with clear intent of going slow.”.
I just got with the flow myself. If the majority rules to go fast, we go fast, if the majority rules we go slow, we go slow.
If I don’t “agree” with the majority, I leave the group.
No drama. No problem. 
Stop using common sense on the Internet.
This thread is one of the worst things I’ve read in a long time. I feel sorry for anyone that plays low level content in pugs, this community is ridiculous 
welcome to retail o.O?