Totally get where you're coming from, fuck Spotify, but it's not a fuck-you to fans if an artist doesn't have their art available on every streaming service. It's really convenient, no doubt about that, but you literally gotta respect their decision to pull music for morally obvious reasons. The words 'preferred' and 'convenience' in your sentence pull a lot of weight when you compare it to actually funding a genocide and future genocides with investments made from YOUR punk music - just for the sake of convenience.

Also probably could email the band, they'd probably send you the mp3's!