is this a common occurrence?

[RiinaNamaste]

Unfortunately there are always going to be people who take the game a little too seriously.

Luckily for me these occurrences are few and far between, however, I did Hydra the other day as WHM and both healers came under fire because the MT decided to go straight in and start fighting and a majority of the party were doing it first time and still watching cut scenes. Consequently I wasn't quitre ready, the other healers was in a CS and he bit the dirt. He was not happy and started F'ing and blinding at both healers with a "WHERE ARE MY F**KING HEALS????".
I didn't even bother replying, there was no wipe, we finished the instance with no further deaths so he wasn't worth getting upset over.

Just let it slide off your back like water off a duck and remember to not give them any commendations.