I always prefered Spotify since using it, but have been using Pandora on my SSV, I found that if Spotify wasn't open on my phone, I'd have to open it before it would start streaming. Where I like the integrated app, is that you simply select Pandora, and tunes start pumping.
I really hope that I didn't spend $50k+ just to have a car with something that doesn't work. I'm going to try a VPN, but in the meantime, I can't see why they can't update the system to offer carplay/Android auto, it should surely only be a software update, at least partner up with Spotify and offer that as an alternative.
Also, I feel that Pandora should have given their partners some warning of the closure, instead of them finding out about it on the same day everyone else does, at least gives them time to get a head start, and maybe then we might all know something by now.