No, it is 5 mans, bgs, arenas, raiding, group quests, anything where you join a group. I specifically said group content, I didn’t say raiding for a reason.
We have had multiple instances throughout wows history where they got the balance wrong and some of the healing classes have had massive advantages in a lot of situations.
1 example of dozens though out wow’s history. Blood Death Knights several times though out wow’s history have been able to solo group content, to include raids at some points. Paladins have had the same things happen for them also.
Are you completely ignorant of wow’s history or just pretending? This has played out tons of times in the past 19 years. We know what happens when classes can heal, DPS and Tank on par with other classes that are more specialized. Being able to sheep a target is not going to get you to soloing raid bosses.
The whole “hybrid tax” has always been there to prevent some classes from going to far, and when they get it wrong absurd things happen.