Pinebook pro is using an arm64 cpu instead of an x86. That creates a big list of problems that you don't have on x86 because that's what all linux desktop developers have (mostly) been targeting.
As one example, I was surprised to find that the tor browser doesn't have an arm64 build :o
I've installed a few dozen AUR packages that only needed aarch64 added to the arch list. I think only one, syncterm, required any other modifications to build and even that was just setting a preprocessor define (__arm__).
Thus far, it's my favourite laptop purchase ever. Beats the feeling I got with the IBM X series or the Ti Book. It's light, zippy enough, great Linux hardware support, and totally silent.
As one example, I was surprised to find that the tor browser doesn't have an arm64 build :o