No good options I have found, but I would love to see the result of this thread. I use both IEMs and Bluetooth headphones depending on the circumstance and the good thing about having both is you aren't stuck with one or the other.
The other question is whether you want things like audio playback speed, chaptering for audiobooks, and marking as read. For someone using this for podcasts or audiobooks those would be useful features, but if it is exclusively music then it won't make a difference.
Just switch it to opt out, not opt in. In Australia you can opt in to organ donation but many people don't care either way. My partner would definitely opt out because they don't feel OK with it, and fair enough, but most people actually don't care and would go with the default.