I kinda agree for the most part, but CMC being teachers of the school of friendship is pretty harmless compared to the huge amoun
g of crazy stuff that happened in the last 4 seasons of the show. I think it's a small thing compared to the rest of the episode. I could say a couple of things about why and how Trixie ended up working in the school, but it's a very small detail compared to the main story, especially when the song is a 3 minutes long goodbye.
I'm not a huge fan of Silverstream unfortunately, so I have nothing to say about her in The last problem.