Indeed, and the data is mostly public: see https://data.firefox.com/dashboard/user-activity https://data.firefox.com/dashboard/user-activity to check monthly ac

Indeed, and the data is mostly public: see https://data.firefox.com/dashboard/user-activity https://data.firefox.com/dashboard/user-activity to check monthly active user evolution. It's going slowly down - something that is unlikely to improve unless Firefox gets better distribution channels, especially on mobile. Giving up on FirefoxOS cut them from having the "default" browser anywhere. They are working on a gecko-based iOS browser since the UE is likely to mandate browser diversity, so maybe that will improve things a bit - though this will only make the situation on iOS on par with Android where Firefox is not doing well market share wise.