For you it's macro jokes, for me it's macro ability announcements. Sometimes I wonder if I should assign a macro + sound effect to every one of my abilities, just to be the one dishing out the annoyance for a change.

I am convinced people do this for recognition. They want everyone in the party to know they're using X ability, and not because the announcement is helpful, but because it ensures that everyone knows they're contributing to the battle in specific ways.

Unfortunately, this is a case of words speaking louder than actions. It annoys me when (example) I diligently interrupt Chimera's voices, only for each interrupt to be followed by a late macro announcement from some other player claiming they're executing an interrupt ability on the boss. In the end the "good job on the interrupts" comments (and likely the commendations) are directed towards the wrong player (despite being late on every cast). Or, the healer who uses a raise macro on a downed player, but the downed player never actually receives the raise - in the end it seems to appear as if the healer did their job while the person on the ground decided to go AFK and screwed over the rest of the party.

This is all a larger problem than just macros, I fear. I think, perhaps, that there is just too much spam in terms of visual special effects and the effects for the really important party-aiding moves are lost in the crowd. Thus players turn to annoying attention-getting macros to ensure everyone is aware a provoke, raise, cover, interrupt, song, goad, etc was used (and who to thank for it).