Why are these glams '' immersion breaking '' but not Lalafells running around on the frontlines as warriors etc.
Or any of the story characters being unarmored, wearing no helmets, gauntlets, shields etc etc?
As far as modern clothes go, I think that the main story and the actual content ingame has more of a '' responsibility '' to adhere to the '' canon aesthetic ''.
What other players do on their '' free time '' for a lack of a better term is quite frankly non of your business and I think that MMO's would be very limited and that people wouldn't play FFXIV as much.
There's a reason why FFXIV has a very active community outside of just running content and why people still hang around and socialize in the game and spend so much time running their own clubs and RP:ing etc.
None of that is part of the main narrative either, it's fluff and extra content outside of the '' canon ''.
Same goes with stuff like minions, I really doubt that lore-wise the hero in WoW runs around with a mutated Chihuahua Murloc hybrid.
But its fun.
Generally speaking I also just have a hard time getting immersed in games when you have shirtless dudes running around and when almost every antagonist like in WoW is a shirtless muscle man.
Or when people wear long cloaks and don't wear a helmet or have spikes all over with shoulderpads that have mini-volcanos on them etc.
People harp on per usual about the Witch Elves and Sorceresses in Warhammer because ofc people only do this when it's female characters... But in Warhammer there are entire factions of shirtless muscle men living in the artic ( Norsca ) and people wear helmets so gigantic it'd snap their necks and they wouldn't be able to walk through doorways.
Modern clothes isn't exactly outside of peoples capacity to create in this game either, there's a ton of story characters wearing them so they're acknowledged by the narrative as canon and GNB + MCH have a much more modern aesthetic too.
Actually be honest here, how often do you actually see them?
Especially outside of Limsa.
There are people who obsess about this a lot yes.
I've never understood it either I only pay attention to my own character unless I see someone I think looks cool then I inspect to see what pieces they are wearing.
If you actually start acknowledging the other players as '' part of the canon '' and actual world in any meaningful way then the entire thing falls apart regardless of what they wear.