My experience has been quite different in that I don’t even have Chrome installed on my Windows machine just yet, because FF has been working fine for me for a long time. I like to use uBlock Origin and Privacy Badger. I don’t use the cloud sync feature myself, because I mostly switch between FF and Mobile Safari and I don’t know if there is a good sync solution, and I’d prefer not to send my usage history and stuff out anyway. I’m sure someone out there - many someones, probably - has painted a number of more or less accurate pictures of who I am using my browsing data anyway.