The comments here seem to say that PinePhone and friends are not ready to be daily drivers or even occasional drivers. I think that's fine.
However, I do want to support these people and their work. I also need an ARM machine to do tests on (for portability of software and such), so I'm thinking of buying this Pro version. Yes, I'll spend a lot more than I need to, but I really want to support them.
So question: are the PinePhone and friends good enough to do development on? And not even normal development; just downloading, building, and testing?