So, OS-level age-gating is going federal, which will effectively kill your rights to device ownership and what’s left of free speech and expression.
Enjoy your free speech while you still have it because this is a clear attempt to erase that right.
SOPA never died, it just went into hiding until time to reemerge, and now’s that time, this is basically SOPA in a save the kids trenchcoat.
What OSs are good to fork or download before this goes live?
They aren’t going to scrub the open source history… You can always just use the last version of whatever before the age check is added, but also there’s plenty of people who are just going to release versions without the age checks… There’s already https://agelesslinux.org/