except for the fact that 50 dissed fat joe first 4 years prior, a couple months after he had the biggest song of 2004 so it was an ongoing beef at that point, good try tho
and yes he called joe irrelevant as an insult to his album sales but joe was very much still somewhat of a factor, where was gza's lean back, make it rain, I wont tell, etc? so of course 50 is gonna say he's irrelevant as a diss but joe still had recent hits at that point
theres a difference between being not AS hot in comparison to a more relevant rapper but still being on peoples radar which is what fat joe was.. and being not hot at all which is what gza was