I'm just gonna say it, this is by far the WORST episode of season 5. They way they handle the "self harm" topic is horrible and they shake it off like its nothing. They onlky reason people love this episode is, by tumblr logic, cause its about Luna. I mean seriously, you can have an episode where Luna killes a ton of innocent ponies and people would still cradle it as a good episode.
My biggest gripe with the episode is how it ends. The whole way through the episode looked like it could've been a great metaphor for depression. But then Luna says that she created the tantabus and the episode goes down from there... It would have been a much better episode if The tantabus was just a creature. Not a force that Luna created. And maybe even better if it was made into a two parter. Cause let me tell ya, that ending was rushed faster than Magical Mystery Cure. It had great potential but the fact they treat self harm like it was just a personality quirk made this the worst luna episode ever. I don't need to go into any more detail because someone better already made this argument. I'll leave the video below