It is really a shame as Firefox is really great to use these days. I've noticed that when switching back from safari and chrome. I now use it both on macOS, Linux and on my iOS devices, where I mostly use Firefox Klar for privacy. I find the the sync feature is very useful (bookmarks, history, passwords) and I trust Mozilla more than I do google. Those notices though, when I do use google services are frustrating and annoying, not to say off putting.