I think it's just a way to fob us off. They know we aren't creators. Spotify has made this, decision an we have to like it or go elsewhere. Me personally are going to amazon music at end of month an gunna use a free podcast app for my music dj podcasts that I love listening to.
They clearly have made a decision to remove all music podcasts. Even though we provide the service to them, for free & they make money from people's subscriptions.
I had a podcast that has been running for 13 years. The feed is taken from Soundcloud so no issues with licenses. I doubt they'll care but I have cancelled my Premium subscription & move to YouTube Music, (which as a much better selection).
I did this entirely because of they way they've handled this & when I contacted support they were actually pretty rude about it.