What have I done?

I could care less about apps, because I can just avoid them. My concern is the OS level stuff, and currently, all of the legislation is around requirements that the OS itself capture birthdate data.

The moment that becomes mandatory at the OS level, is the moment I drop whatever it is that is forcing that issue. Systemd was the first to pre-emptively comply with facilitating the change at scale, so chances are, they will keep doing the same going forward.