Earlier quoted context omitted.
Do you though? Really? https://www.wsj.com/articles/resignation-at-gitlab-highlight...
Yes, they do. If you are suggesting they should do what those employees did and quit in protest (which for a company would be to shut itself down), then I guess you are right they don't HAVE to comply with US law... but they do if they want to continue to exist.
Paying staff anonymously would be problematic, I know.