I think that's a completely fair point, I just think arguing that since this doesn't 100% fix PLD it's not worth doing is a bit silly
If PLD is designed to be a tank for real "hard" content when it shows up, so be it. But right now PLD doesn't even have that to look forward to, and I think that's a bit sad which is why this idea is a step in the right direction.
That said...
No bad or dumb involved here, and you don't have to insult to try and make a point

. It's not like I haven't seen my share of FF endgame content. Maybe for these battles it seems "dumb," but PLD should excel at something. Not all groups kill stuff in < 2 mins. You're lucky to have fallen in with a shell who does, but that isn't everyone's experience in FFXIV.
You're making yourself looks silly by waving an epeen around when PLD DOES have a damage mitigation problem. If you think PLD doesn't then I don't know what to tell you. You can throw around dps parse numbers all day, it doesn't change the fact that PLD can't take a hit any better than a WAR, and has reduced HP to boot.