Rather than a cutting-edge Snapdragon 8 chip, the NexPhone is going with a rather odd choice of Qualcomm SoC: the QCM6490. This chip is primarily designed for IoT purposes, and it’s not exactly new, either — we saw the Fairphone 5 running it back in 2023, and it was noticeably sluggish, even then.
Doesn't say how the various OS'es get installed, they talk about some kind of multi-boot in the OS, that sounds bad for long-term maintenance. Give me an x86_64 CPU and UEFI, maybe I'm interested. This ain't it.