The general player base needs to improve

[Bourne_Endeavor]

And then we'll be back to Amdapor Keep 2.0 where half DF parties couldn't make it past demon wall. Or even worse, Pharos Sirius, where people wouldn't even bother to queue up because the first boss overwhelmed most DF parties with an army of explosive hellhounds.
What are these "acceptable standards" you are talking about? Where do you exactly draw the line? .

Significant problem with both those dungeons is there was a faster alternative. A proper curve funnels everyone through the same route. Weeping City worked wonderfully in this regard because you either pushed yourself or you weren't upgrading your tomestone gear/obtaining a i230 drop. Had Stormblood began with dungeons of that caliber for Expert, you either do them or accept a less efficient way to cap for the week. You'll be amazed at how quickly people motivate themselves when reasonably pushed. We need to emphasise reasonably here because, no, dungeons shouldn't be some insurmountable activity on par with EX Primals. But I think Expert dungeons should require more than a pulse.

Your so called "good guys" that only "offer friendly advice" and think that it's the rest of the community that "refuses to learn" are very often people that should be more concerned about solving their own anger issues rather than trying to change the rest of the players so that they meet their own "acceptable standards". I have no idea who the TC is, but I'm very familiar with this sort of player profile that claims to have just given advice when on reality ingame they are nothing but angry bullies ready to rage at the very first mistake your party makes.

You realize the inherent hypocrisy here, yes? By casting a wide, generalizing net, you look just as toxic as the players you're accusing. When people cite those "refusing to learn," they mean dungeon runs where DPS will not AoE no matter how often they are asked; any job who has not even the basic idea how their job works despite being at max level. In plenty of cases, it's these people who get the most irate despite causing the problem. Or am I an "angry bully" for expecting you to press your AoE abilities when I pull ten mobs and you're wearing better gear than I am?