When you buy a Jolla device, you are taken through a tutorial. The gestures aren’t that difficult to get used to. To me personally, they seem a lot more straightforward and intuitive than my wife’s Android phone.
Incidentally, this winter I traveled in a couple of developing countries and bought local SIM cards from an office of the main telecom concerns of these countries. Both times when I said I wanted to use 3G data, the clerks grabbed my Jolla from me and tried to get to where they thought the settings menu was by repeatedly mashing where the Android back button would be. When I said it wasn’t an Android phone, it was like they simply couldn’t absorb that information, they just started mashing harder. That really underscored for me just how much of a mobile monoculture the world is. (The clerks probably could have found their way around an iPhone, too, but I didn’t see many of them in this region.)