A "Weird bug or edge case" is rarely the case with these upsells. There's a lot of marketing and research budget that goes into designing these flows and equally tonnes of data behind observing the behavior.
That precisely is my point. The behavior on my end is strange as well where it happens at times i'm commuting and other times, when the phone is still, nothing. Where can i go and switch this off in settings for Apple Music short of killing the app and uninstalling?
Isn't it strange that all app behavior and interaction with the OS for apps that aren't owned by Apple need to be predictable and controlled through standard settings while Apple Music has hidden access to over ride these behaviors?
I can write paragraphs about similar behavior on the News app and other upsell services. When a platform can directly push apps without competition to your device that they don't need to compete with anyone for installs for, that is one thing, having access to undocumented APIs is another, having the ability to plow all revenue from their apps right back in without the 30% cut or other restrictive practices they impose on their direct competitors is yet another.
Either there should be transparency or there should be restrictions on the way internal Apple apps are allowed to compete in the marketplace. A random product manager at Cupertino should not have more power and clout over what apps get pushed to my phone without consent or dialogs and upsells get thrown in the UX compared to what is possible for public apps to do.