I wouldn't call that "operating as usual". You can search for Apple Music playlists and play them that way, but you can't browse them or get suggestions.
I don't mean to be too insensitive to the subject matter, but that's quite a disruption for a $10/mo service (whose client app is already flaky enough as it is). Would it really have hurt to add a little 'x' to close the message and proceed to the regular browsing UI?
(edit)
Or, if disrupting the service like this is by design and a protest statement, I think the message should be clearer. Some fine print at the bottom saying "Your regular Apple Music features like Browse and For You will be back tomorrow.", maybe? Cause right now, it's just not very clear if this is the Music app being janky or a deliberate choice.