it’s not about how easy it is to install it’s that it has to be installed at all. Over here we prefer phones as there’s a lot of cheap phones here that only cost less than $100, and since most phones here come preinstalled with chrome, even if firefox is free and all, why go through the hassle of having to go and install it when Chrome’s already there?
most people here have a mindset of “if it ain’t broke don’t fix it” which explains a lot of things wrong in this country.