This is a quite misleading statement, since Librem 5 is still supported, will forever be supported and always had features that no other phone has, like true convergence and user ownership.
You should clarify what you mean by "can't keep up with" if you want to argue that.
Ok, I'll try if/when I dig it up again. Flashing from brick mode took me an hour in the past. I'm not expecting the camera or phone to actually work either, so not sure what the experiment gets me for the time invested.
The camera and calls have been working fine for me on Pinephone since a couple years ago or longer (and not only on SXMo). Perhaps you may have a faulty unit?
SXMo makes the interface unbelievably snappy, including playing videos, maps and more. You can find example videos on their website: https://sxmo.org/