This project was started recently-ish and implies reverse engineering is the most important part. https://librephone.fsf.org/faq Haven’t seen much else listed out.

Used to spend a lot of time reading meta.stackoverflow (looked an awful lot like work at a quick glance). The sentiment from the question answerer side is something like: “I’ve answered this exact question 100s of times, why won’t anyone search”. Then this expands into enough irritation that you get a closing frenzy and similar sounding questions get caught in the cross hairs. And then everyone’s mad. (plus a sprinkle of people who are just assholes on top of that)