To be honest, I think your's is kinda self-centered. There is also the issue, aren't people who are basically just doing social stuff or running old content once its yoloable the people Devs can legitimately least worry to maintain? Same with the people who are deeply into the social stuff and either make FF14 the one single game they play or outright the center of their social life. And tons of the content you mentioned boils down to people engaging in hardcore stuff and making videos from that point onward.
And most of the content you mention outside of Bozja and soloing PotD is basically stuff you get start to do if you set your eye on a specific piece of glamour and be done with it in a day or so. Beast Tribe Reputation is really more of a leveling catch up system if you ask me and not really a good one, with how limited it is and with how little experience they give and the new relic weapon farm zone is literally only gettinf released once the expansion is halfway done. And I hate to break it to you, if I don't really need to play the game as a social plattform and want to focus on combat oriented content, FF14 is still kinda lacking with the amount of content that is released, especially since a great number of it is really do it a few times and grow bored of it. With how big it is, SE should at this point slowly start to expand the team and ramp out production to catch up to the amount of Content WoW releases during a regular expansion. Criterion Dungeons look like a good first step, though I hope it doesn't end up like a system where we get only 1-2 new ones each expansion.
If you ask me, it just makes the game much harder in the most nasty way, because with how most classes rotations are centered around building towards this strict, big two minute burst and to a lesser extend the 1 minute one, it makes recovery from death pretty much impossible. If you mess up once, you are basically out for the entire fight. I kinda feel like WoW is less stressful in this regard, because its really much less about pooling and slowly building everything for this big burst windows. There are burst windows, but these usually require much less preparation and usually you can recover from death and resume your rotation much much easier. Like if you're a BoS Frost DK and die, it isn't taking that long to pool back that runic power.