[rjsw]

My thoughts after the discussion yesterday are that I'm going to open up the case of a PineBook Pro or PinePhone Pro anyway so it isn't a big deal to have to swap the eMMC module to another machine to write it. I can live with not being able to boot them from SD.

[jraph]

You don't have to. I have the PinePhone Pro, you can flash Tow-Boot to the SPI without having to fiddle with the hardware. After that, you can chose to boot on the MMC, or the SD Card by pressing some buttons without issue.

But the important issue being discussed here is not a technical issue. It is a community / social issue.