Most users have never even heard of Firefox. I just installed it on someone's phone yesterday, along with uBO; they had never heard of it before, but were very

Most users have never even heard of Firefox. I just installed it on someone's phone yesterday, along with uBO; they had never heard of it before, but were very excited about being able to watch YouTube without ads. My social circle isn't very large, so me helping occasional non-technical users install FF+uBO on their phones isn't going to affect the numbers very much. Even in the tech company I work in (not an adtech company), most people use Chrome, not Firefox.