The Fight is a really bad episode. Even most bad Voyager episodes can say the story is competently structured, even though they are bad stories. The Fight is not even competently structured. It's a storytelling mess, it's boring, it's stupid, it makes no sense, and it was obviously some writer's bad excuse to bring back his favorite single appearance character from TNG.
Worst episode ever? No, Fair Haven, Spirit Folk and Threshold out-suck it.
Muse? Eh, it was a good try.