Probably not since I dont use FPR on any device that I have. But the point is that somebody paid for that and midrange xperias are not cheap for what they are. Another thing is that this will be 3rd generation of "supported" device with more or less the same issues. So it's not exactly about HW as it is about current situation with sailfish SW side.
IRL situation is that one needs expensive midrange phone which is a year old when support is ready but not ewrything works. Then another 50€ for running android apps. Meanwhile I got XZ2 with 100xm2 headphones for less than the cheapest XA2 ultra I found.