Anyone has some longer term experience with it? It seems like this was first made available 3 years ago or so?

There is a project trying to revive FirefoxOS: https://capyloon.org/ which is what inspired ChromeOS, but maybe I am taking the headline too literal 😅

With silicon based cells this seems unlikely, but with Perovskite based cells it exists already.

Also, TIL the Red Cross is technically supposed to be the enforcer of these conventions.

Enforcing is the wrong term, as it is a humanitarian organisation. But the International Red Cross in partnership with its Palestinian Red Crescent counterpart is very much active in documenting these violations of the Geneva convention and working together with the ICC. Of course with the world being as it is right now the impact will likely not amount to much, but they are at least trying.