I mean, you're the one copy-pasting someone else's bad faith argument in order to protect your turf. I really don't mind if you want to keep your vampiric barbarians, personally. I'm just explaining why we keep getting these threads from fresh players to this game about how job identity in this game doesn't make sense.

Most players will ferociously defend anything that gives their job an advantage, even if it makes no sense on the job in question. Players were demanding that WAR have access to Cover in Stormblood because it was 'unfair' for PLD to be unique in that regard. Hilarious. But if you constantly cater to those types of identity-eroding demands, you'll end up with every job playing pretty much the same as a compromise. The community is 100% responsible for what we have now.

If you want diversity, then you just need to design jobs so that they have similar capabilities using very different approaches. It's the old Deus Ex approach of 'do I infiltrate this place silently, do I talk and barter my way through, or go in guns blazing?' All are viable approaches at the end of the day, yet each is a unique experience. But you have to get the playerbase to buy into the fact that their job might not happen have a cool feature that another job does, but it will have its own unique features that make it fun to play.