PinePhone even has a great solution for the eMMC ease of use problem. The bootloader loads from eMMC by default (and I believe comes preloaded with a distro based on what version you bought) unless there is a bootable (micro)SD card inserted. There's a popular bootable SD card image for the PinePhone that exposes the eMMC over USB allowing flashing using `dd` or similar, which makes the whole process rather painless compared to the mess that is raspberry pi.