Personally I find arguments like this to be some of the weakest and most offensive, really. You're trying to diminish what other people like about the class to make it seem like the Limited version we're getting is some "true distilled essence of the job" that only the truly devoted and worthy will appreciate, as though you're qualified to decide that. You call out some random guy for saying Blue Mage is a nuke mage, and then make a patently false claim that "95% of Blue Magic in older FF titles is situational or gimmicky". Of all of Blue Mage's spells, even in older titles where the most gimmicky and situational spells are, 30-40% are just straight damage spells of various elements. There are more straight damage spells in every iteration of Blue Mage (except Quina but he's about as unorthodox as it gets and no one is here whining BLU doesn't use a Fork except me), as opposed to support or debilitating or "quirky".
Do you even like Blue Mage to be misrepresenting it so much just to fill your Limited Job agenda? Like... what do YOU even like about it?
It's honestly pretty disrespectful to people just for having their own opinions and liking different facets about the job. It's like me saying that people who love the Lvl 3, 4, 5, ? spells don't like Blue Mage and should just wait for Arithmetician to be added because their idea of Blue Mage isn't ACTUALLY Blue mage. Just because someone likes it more for casting and learning monster skills, or the aesthetic, or whatever doesn't make the job any less important to them. And even if you force someone to concede that, OKAY, guess they don't REALLY like Blue Mage, it's STILL not wrong for people who love and play FFXIV to want a class to be adjusted to play it in all of FFXIV.