No they haven't, they added a field where a user can store their birthday, as required by law in parts of the US.

That's an obvious foot in the door. The law is going to get worse. And we users expect the services we've been trusting all this years to see that too and act accordingly in response. As long as the critiscism remains civil, it's perfectly valid.

Do you want linux get banned in California?

There is no single Linux. Each distro should have the agency to decide for themselves how or if they want to operate in California.