I bought the mudita kompakt in the end, and I love it. A bit overpriced considering the hardware, still I think it is a piece of art and is a joy to use it, thanks also to the cure in the software.
But, as I say in the title, as an appendix of the concerns about “aosp 12 being outated”:
the webview component boundled with kompact is at version 128, a chromium version very old (august 2024).
This is a great security concern, because when the user install a third party app, and specifically a third party browser (like einkbro, duckduckgo, and a lot of other popular choices) he will navigate the web with a very outdated engine. This is a serious concern, probably the biggest security hole in the device. And could be fixed pretty easily, boundling an updated version (better would be an hardened updated version, see vanadium) in the next release.
This situation is very, very bad and should be fixed asap.
In the meantime, I suggest to people here to use updated gecko-based browsers (like ironfox, an hardened fork of firefox) or a chromium-based browser that ships the entire engine with the apk (cromite and brave for example).
AVOID: duckduckgo, einkbro, foss browser and a lot of others, VERIFY THAT THE BROWSER YOU ARE USING DOESN’T USE WEBVIEW.