If I ignore my disgust at having these delivered by the OS, they don't look much worse than Google's attempts to get me to use Chrome whenever I open their products in Firefox.

Just opening google.com reliably gives me a "Google recommends using Chrome" popup in the corner, and on some kind of timer you get the same popups in Google Drive and most of the other google products.

The browser wars are alive and well, just not in the way I want them to be.