Just to provide one example, I definitely have seen macOS pop up notifications advertising that Safari is better than everything else, and I should switch back to Safari.
I would love to see a screenshot because this I simply don’t believe
I saw it within the past year. I didn’t save a screenshot anywhere I can find. I believe I applied defaults overrides (like in the link) to prevent it from coming back, much like Windows GPO policies.
[0] https://www.ctrl.blog/entry/how-to-osx-try-safari-promotion....
[1] https://lapcatsoftware.com/articles/TRYTHENEWSAFARI.html