It's not just playing the wrong band / app. It's signing you up for a subscription. You still have time to cancel before you have to pay. But it's one more thing you have to worry about now.

It should have confirmed that you're fine with subscribing if that's what you have to do to listen to the band. And it's also fine to play the wrong band if you have a subscription already.

It knows a) whether you have overcast installed and when was it last used, b) whether you added the overcast band to your favourites or ever explicitly played one of their songs. I'm sure there's some tiny section where the the extra prompt would be useful, but they could be so much better than that.