Cool, but I think they're holding themselves back with that weird form-factor. I would've preferred if they'd included a full QWERTY keyboard, like the the GPD Pocket 4[1] or the GPD Win Mini. With a proper keyboard, I could write code on the go, easily edit files, navigate a terminal and mess with things... and do so much more in general. Also, 8GB RAM is barely enough these days, whereas the GPD comes with upto 64G…
GPD already makes such things, as does ClockworkPi. The Flipper One is exciting in significant part because it offers a different, smaller form factor.
https://hackaday.io/project/202522-cyberdeck-handheld
Trying to make my own too. Ordered some prototype keyboard PCBs. No idea if I'll get anywhere but I'll try.