The problem right now is that clearing any 8-man content with a BLM is like putting a challenge on your group, it's like playing FFVI without using Ultima spam or things that are even more powerful, because you love the game but think it makes it too easy (been there done that), it's a job that is clunky for the group to play with, it has 0 utility, is more punished by mechanics than any class and ppl can't even claim it's easy to play to compensate because if you look at fflogs you'll see that the lower the percentile the worse BLM is doing...

It's by any objective metric the worst job in the game, and the only saving grace it has is that it's actually fun to play (IMO), but even then most healers think it is unfun to play with a BLM and for sure it's not fun for the entire group when you enrage at 1%, when I play my black mage I really think i'm having fun at others expense...