Long story short. ALL classes/specs should have a tool somewhere in their tree to deal help deal with/interact with an affix or it shouldn’t exist.
Raging at least you can dps in a way that kills the toughest mobs first to help with that, even if you don’t have a soothe.
Incorp or afflicted…some specs have absolutely no way to interact with the affix and are a burden on any group they are in that week.
All other affixes have at least some way you can interact with the dungeon even if not directly. I.E. Self heals/damage reduction with bursting (or controlling dps to not cause high stacks)
Unless incorp/afflicted can be interacted with by everyone, then they absolutely cannot stay.
I wish they change a couple of the new affixes and make them fun to handle instead of an annoyance. Imagine one that randomly explodes bananas out of a mob that dies and if you step on it you slip and get stunned but there is always one special banana bunch that you could pick up and throw it at the next set of adds and it makes them slip and get stunned lol.
I dunno. Something fun or at least funny, or even gives you a special buff as well as puts you in danger. Not all… dispel, interrupt, heal through it.
Raging doesn’t even affect the toughest mobs anymore so there’s that. M+ is designed to be an organised group content first, and such a group will overcome challenges, no matter the affix.