I think this is actually a big advantage of these projects compared to previous smartphone attempts. They are not building a full new OS that developers will ha

I think this is actually a big advantage of these projects compared to previous smartphone attempts. They are not building a full new OS that developers will have to target; they're running a real, full GNU/Linux distro (GNU being relevant here, because busybox/linux has already been done inside Android). So, while there will be some effort required to make gui programs work, libhandy supposedly makes this pretty easy. It's an order of magnitude less effort than porting an app from a different platform. Not to mention that everything CLI should Just Work -- this is not relevant to most mainstream users, but it's very relevant to the developer story; I think it's likely that FLOSS developers will start targeting these phones as soon as they become usable enough to developers. Personally, I'm planning to get a Librem 5 as soon as they're off backorder and there are reviews from non-affiliated parties (the latter might be now; I check every couple months and it's been about that long since I checked last).