I always facepalm when tank guides / advice says bubble taunt is a shit talent. For an inexperienced prot pala / random pugs where things go south it's much better because you can bubble and still hold aggro and it gives a healer / tank 8 seconds to catch up on hp.
But yeah I had once some tank who never said anything and then ran last boss in Atal into the spiders and then when we wiped and ppl went "wtf tank" said "first time here how was I supposed to know?" Well how about you asked? I was healing on some alt but I could have explained the basics it was m0 there was no timer...
I was once pugging normal Raden and majority of the raid had no idea what to do but when me and 2-3 other people explained the strats people actually started trying, still took a couple of wipes but they learnt. I was amazed because 90% of pugs literally disregard any advice and try to brute force shit.
The attitude people display in LFR, where it's just "wait for more stacks of determination" instead of actually trying to do the strats.