No idea if it’s any good, but here’s an e-ink watch: https://www.crowdsupply.com/sqfmi/watchy

leap second corrected or not?

C preprocessor wouldn’t care about it

All instruction sets are documented in English and it’s more esoteric so the tutorial scene in any non-English language is less developed, so that requires even more English skill than memorizing a couple of keywords in a mainstream language.

Dynamic yes, objecting to 24h. Many places keep the same dynamic address for months or years

Maybe yours does, but that’s not universal in the slightest

They used to say that 10 would be the last version and they’d just update that

Shellshock happened in 2014 https://en.m.wikipedia.org/wiki/Shellshock_(software_bug)

You don’t have to give contact permission to the app.

Don’t give it internet access during setup.

I think there is, but AFAIK they can use it for something very minor and it still counts.