So the thing about the systemd part that was recently submitted, the one good thing with this field is that IF it is used is up to the distros and then also the users. For example you can see what is in the userdb now by running userdbctl user <yourusername>.
You will see a lot of fields that are not used. The same can be done with the age field.
This is why the problem is not so much with systemd, etc. adding this field. They even said that they are not what would do something with this field, that would be up to the distro, etc. The problem is the laws themselves, which seem to be spreading globally like wildfire. If the laws do take hold AND they start enforcing them, it won't matter. At that point if you say go to something that doesn't support it you would likely be unable to use certain services. Also the projects could then have legal action taken against them which would make them shut down or comply.
Right now we just don't know enough. It is worth watching, paying attention, and letting your voice be heard. What I have seen from the likes of systemd, freedesktop, etc has been more overblown than anything. That could obviously change. Right now these laws have everyone in a panicked state going after anyone.
