@ariarhythmic
They cannot be trusted to act in good faith, but they can be trusted to act in selfish ways. It feels like your arguments all start from "companies are evil and will always do the worst possible thing", when in reality all the evil crap they do is because it benefits them in some fucked way.
As for network effects, yeah I concede that point. Way too many people are still on Twitter even after all the garbage (that benefits Twitter!) they pulled. There is constant attrition, though. And I feel that if we keep improving the migration paths, keep building bridges, and push for legislation that lowers switching costs, the scale will tilt.
You are going to have to explain how giving someone a single "is over 18: yes/no" value constitutes a privacy violation because you keep insisting that it is without any arguments for why.
And even if it is, I'd rather have this system than give corporations the "muh child safety!" excuse to ask for my ID. Because that benefits them a lot