I uninstalled my metamask because I was worried about browser spying me and knowing that I use cryptocurrencies.
I edited my previous post. Anyway, you could use private window on firefox or brave browser for better protection. I'm not yet using brave browser, but there are many good reviews about it. It can also block ads, and trackers.I uninstalled my metamask as well when its asking me to update. Due to some reasons that I've been aware of extension spy, instead of updating it I uninstalled it.
I'm not aware of the extension spy, but be sure to follow their twitter for new updates.