So, Pld just isn't broken enough to warrant changes? lol. I can just picture the way that conversation goes at SE development meetings: "Well, yeah. Pld is sh**, but ... at least it's not as bad as War was in 2.0 ..."
The thing is, I can't really accept this as a valid reason to not make adequate adjustments because of this right here:
Pld has already gone through a (near) War level crisis, and it happened at the start of 3.21. The Dps checks of Gordias Savage and Bismark Extreme made it very clear that Pld was damn near unusable in that content. Raid groups were actually kicking Pld's out of the party until they were already over-geared, and PF's were specifying Role Requirements for Wars and Drks. The result was that people started to abandon the job wholesale. Even long time Pld's were forced to take up Drk or War just so they could stay active in the current content. SE "fixed" this problem by doing two things. The first was making "massive adjustments" to Pld's kit ... which turned out to be the smallest possible adjustments they could have made and literally changed next to nothing. The second was reducing the dps checks of future content so that Pld could bring their specific style of defensive tanking along and not be left out ... only that didn't really do anything either, because Pld's superior defense is the most well known lie in the game.
Even before Gordias Savage came out, the community had already proved with extensive testing that Pld's "superior" defense was actually not superior in any way to the other two tanks. So, SE isn't really fooling anyone if they think this is a valid excuse for not putting in the time and effort it would take to actually make Pld function even half as well as Drk's and War's do. The fact that the vast majority of the Tanking community have switched their mains to Wars and Drks should have been proof enough that something was wrong ... but, like you said, it's not as bad as War back in 2.0.
SE was genuinely at risk of losing subscriptions over that, and it was hot off the heels of the failure of the initial release of FFxiv. That's a lot of pressure to make a fix, and they're not likely to feel that pressure again now that the game more or less functions. I guess it SE isn't at risk of losing subscription numbers, then they consider it to be fine and "working as intended," even if it's utter crap.