I think somebody at Google either shipped a bug or the most confusing feature in Fitbit, their premium membership has a new AI driven app (obviously) and it now sends AI summaries and advice about your stats even if you haven't opted into the new app with a subscription active.
For the past day I've been so confused wondering why does Fitbit suddenly have so many opinions and only found it today by opting into the premium app and seeing all those summaries on the home page.