I had another theory, budgets for streaming shows are falling. Adding a song as filler is probably one of the cheapest ways to add 3-4 mins to your 60 min contractually obligated episode length? Or maybe not. I have no idea if it's cheaper.

The Queen's Gambit had one in the 2nd to the last episode. It was clearly filler and has been called out by many critics. I still loved the series over all but after few moments of that filler I skipped forward to the end of the song.

Presumably it's because Umbrella Academy was a comic by a musician? Would explain the focus on music

I like the Noel Gallagher montage when thatb kid is walking trhough the apocalypse

I've noticed most Netflix productions seem to have _really_ good soundtracks.