It's extremely technically[/u] correct that in [u]one[/o] very specific high end encounter with one very specific party composition with one very specific strategy executed by one very skilled group of people, healers weren't a requirement. Don't oversell it. Even restricting our view to Ultimates with people trying to clear without Healers, has anyone cleared Dragonsong yet with 0 Healers? One group managed it using just 1 Healer, but the most overpowered one in current content and, again, a very specific party composition, strategy, and skilled team. Has P12P2 been cleared with no Healers yet? Which Pandemonum Savage fights (1-12) have all been cleared without Healers? While you could argue any is too much, I don't think it's the prevalent thing you bill it as.
People are hanging their hat HARD on that 0 Healer TOP clear, seemingly willfully oblivious to any other fights in the game or even the very specific things that went into that one clear and the fact no one (unless this has changed?) has replicated the feat yet.
It's like saying technically fights can be cleared without Tanks - people cleared Ex6 without one, and it's probably possible to clear other encounters without Tanks...but that doesn't make it practical or indicate Tanks should be removed from the game. Some fights have been cleared without DPS, like the all Tank runs. No one's pointing to that to indicate that "DPS aren't needed to clear the hardest fights in the game".
I appreciate the sentiment, but pull it back some. There's a legitimate argument to be made that doesn't require the hyperbole.
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One thing interesting to me about that quote - they admit they've reduced healing requirements. Which means healing requirements could be scaled back up. And while people say "Doing that means casual players won't be able to clear hard content", the same rings true for DPS rotations. But the more important key is that it means they wouldn't have to "remake all prior content" since prior content seems to follow that same design and is in the game with that level of healing requirement already (just it's not noticed because of how powerful syncing is.
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In any case, the point still stands that most people are talking about feelings. Reference an extremely "technically correct, the best kind of correct" fact doesn't alter the reality that the majority and crux of the arguments are not factual based, but subjective positions based on perceptions of those facts.
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As for the dismissing arguments:
I've played since 2.3. Always mained Healer (mostly WHM, sometime SCH, most of the time dual maining them both). I've done Savages (at level), Extremes (at level since SB), PvP, PvE, Solo stuff like PotD, the MSQ I always run as Healers, dungeons of course, and Exploration Content, and I have every WHM and SCH Relic i nthe game.
My arguments here are routinely dismissed by people as me not "having more experience". So I'm not sure how that metric works. Moreover, I far more often see the arguments being dismissed as those of people who don't consistently run savage (with childish arguments), not those who do.
I agree everyone should be listened to, but that also means solutions must incorporate feedback from both/all camps, not just the hardcore raiding community.
I'm not sure BLM is "such a well designed Job". It gets that accolade a lot from high end players while everyone else...avoids it like the plague.