Great post! I’ve often used low cost as an argument for choosing open source software in my [IRL] communities, as the other advantages aren’t that successful when talking to people on a personal level. This post elaborates on those other advantages in a convincing way.
I’ve also used a pinetime running infinitime for the past year, and I agree that it’s not exactly feature rich. I like it though.
I’ve heard that ‘bangle.js’ is an open source watch as well, with a decent feature set.