>>79269642Midnight Grand Orchestra is a side project. Everything Mori has created the last two years and will create moving forward is a UMG project. I don't think your sentiments are unfounded but it feels a little silly because it should have been obvious by now, right?
Besides, the song is the song and isn't about SSI the same was Future Island is a One Piece song, and from what Mori has said, the MV is the same way.
This is as much "the Bakemonogatari ED" as it is a song by supercell with a MV on their channel with 15 million views.
https://www.youtube.com/watch?v=eLPs_w-FepA 