Firstly, it's a filler. And for that I think people hate it out of principle. Fun be damned unless it furthers the plot or characters. People seem to have forgotten that Flash and Supergirl are supposed to be the more lighthearted shows to the dark and gritty Arrow. We should want to see them have fun and be goofy and campy. But I get it, if you don't like musicals, you won't like this. Secondly, the plot is not there. And I don't care. I get to see people from several of the DC shows interact AND SING! So who gives a damn, it was fun to watch, and there's surprisingly good voices in this, if you manage to listen past the studio edits. Thirdly, Gustin and Benoist have AMAZING chemistry. Had they shared a show I would've shipped them harder than anything. Mostly because their characters are both super in one way or another, and I've never been able to buy into superhero relationships where one partner is human and the other not. Relationships need 2 equals to work, realistically. I get that comics has a human partner to keep the Super one "grounded" in his/her humanity, but that's OK for drawn characters. Put them on the screen like this and it's harder to buy. Fourthly, I appreciate the Glee-vibe this episode gave. Darren Criss, Melissa and Grant have all proved to be great voices, though frankly they really underused Darren with the air-time he got. Eh, oh well.
