If it’s anything like Linux desktop the apps you really need (for me, WhatsApp) are going to be available in 10 years. After that it’s a short slide to “if you don’t have Linux (why not?) by the way here’s how to install on android/iOS if you must.”

At least that’s my experience as an early Linux on desktop adopter. Yes Linux is a niche thing in mobile at the moment but the truth is the developers are the ones who make it happen and they are already there.