I don't think they care tbh. Feels like too much work for too little return. If this passes (let's hope not) I'd just expect them to ensure the default browsers

I don't think they care tbh. Feels like too much work for too little return. If this passes (let's hope not) I'd just expect them to ensure the default browsers in the most popular OSes does what they want. That would be full insight into 99% of web traffic. They already can't see people who really want to hide, and they won't later either.