my impression after several m+ threads:
every player that's in the 1-15 range is considered a bad/lazy player just for doing so.
unfortunately, that range is likely to be the majority of the m+ playerbase.
given that asumption, the majority of the m+ playerbase is playing bad.
thus all of those affixes ultimately are punishing the healer since you have to expect the other players to do fuck all about mechanics.
a relieve would be punishment as dps decrease in some other form than death for the failing player - reducing the likelyhood of picking on the healer when a dps fails.