So, after seeing how cheap and available these Phomemo printers are and with this CUPS driver looking like a good option, my instinct as someone who also wants one of these sitting permanently on my home network as to appear all the time on all my machines' available printer options, is to get one and tether it permanently to a tiny linux SBC that has bluetooth and running the driver and print sharing. Like the OrangePi Zero 2w I have sitting unused in a drawer somewhere collecting dust.