So after waiting for about 2 weeks to see the consequence of homogenization

[ForteNightshade]

I think the problem is not the "raiders who push said meta", more likely ignorant players locking out jobs and such because they kind of read somewhere that X or Y job was underperforming somehow.
Meta will always be a thing, because the game is done in a way where people can math out which comp will have the fastest kill. That does not mean that other jobs can't perform, it's just some player who choose to understand things that way.

I'm not negating some jobs need a serious fix though! Just that it's not all "because of the meta"

That isn't necessarily the case. The discrepancy between certain jobs now is staggering. A 20% Monk offers more than a 50% Ninja. Let that sink in for a moment. 20% means said Monk either died or has no idea what they're doing, and yet they're still better than a decent Ninja. This becomes even worse between the Casters. A 95% Red Mage is 40 DPS below a 50% Black Mage. That is utterly absurd. Locking out jobs isn't ignorance when there is this wide a gap between them. It can actually be smart. You're simply playing the odds. Sure, you might get an average Black Mage but that's better than an orange Red Mage. Conversely, an average Red Mage is 1,100 rDPS below the aforementioned 50% Black Mage.

Meta isn't the issue here. It's horrendously poor balancing. Your odds of clearing are straight up better taking a Monk over Ninja, and they're better with a Black Mage over a Red Mage. If this were by a small margin, no one would care. Look no further than the tanks. What we're seeing isn't small margins. Ninja, Bard, Machinist, Dancer, Red Mage and Summoner are several hundreds if not nearly a thousand below the big three. Dragoon, Monk and Black Mage are absolutely dominating.