Had it happen just like that lots of times. 25 minutes waiting for a healer or a tank and the run is done in 15 minutes or less. lol.
They dump the two roles, tune the game for all DPS, then we’re all in a lot faster and no one screaming at healers or tanks for stuff that likely isnt their fault.
Half the time I think people run as tanks, not because they want to be the shield for the group, but because the enjoy the invulnerability. Hardly team players.
Healers are usually good at being team players, but they also take heat for stupid crap DPS does to themselves.