I think really it comes down to a knowledge & skills gap exacerbating the reality that the DF playstyle is not very accommodating if everyone in the party isn't all in on it.
The regression the thread experienced earlier is exemplary of the toxic hubris of those that would insist there is a "best" way to play, maintaining the rift in the community by attempting to invalidate the concerns of an apparently sizeable population that in fact does not want to be all in on accommodating DF.
There are, obviously, arguably "better" or more efficient ways to play than some others. Obviously, again, not everybody wants to enjoy the game in the same way, or with the same methods & severity of sweatiness. It seems to me the most gracious move of a community that wants to be welcoming would be to find ways to accommodate the masses when interacting with them, if for no other reason to gain enough amity to influence & assist in their development. Maybe we'll have less people spamming Spread Needle on Lizards if we put in the effort to help them develop in a way they can be receptive to, instead of immediately shunning them. Of course, that does not absolve said individuals of their own responsibility for improving themselves & the community's experience.
Further (imo) a lot of the fun is in the game is adapting and making things work despite what may or may not allegedly be ideal. Experimenting beyond the norm is how the game grows, as opposed to being refined into monotony & obsolescence. The fact that DMC no longer exists is a HUGE blessing b/c there's more opportunity to abandon homogeneity.
Most people don't even have the gear to attempt the homogenous idealizations anyway, regardless of the skill to flawlessly execute it. Playing in that reality is undeniably an area we could all grow in. Not only do some players find comfortable & particular niches, it's my belief that the classes are inclined to their own. I.E.: not every HU needs to be HUCT-lite, & I would LOVE to see that explored more. I don't think it's a big ask for the veteran or rookie players to learn to play with a community that doesn't want to be restricted to no resta. That doesn't mean DFers can't or shouldn't DF, it just means people need to be considerate. If sweaties want to sweat there are plenty of people willing, & not castigating those who don't bow down to the sweat ideology might open the door to more people getting curious & willing to try it, or perhaps even a newer "better" sweatier style.
If you depend on someone else to enable your playstyle, let's normalize seeing if they mind. Maybe apply that presumption to seeing if you can enable theirs. Further, instead of arguing over whether your way justifies telling someone else how to play, it'd be really awesome if we could as passionately promote knowledge of game mechanics, & how to be useful with and without Uber gear.