I've heard Chromebooks are such a pain to put alternative OSes on due to their BIOs. Are there efforts to just reflash these things so they aren't beholden to Alphabet? That would be the most libre-resistance move: "Un-Chrome" the device permanently.

Hmm as I was typing this I did a quick search: https://libreboot.org/docs/install/chromebooks.html

...but that's only for ARM Chromebooks.