Stop listening to rumours. Some distros, and Hardware manufacturers, who ship Linux based Operating Systems, are based in US States that have voted to implement Age verification Laws. Those Manufacturers and Distros are subject to those Laws, and are legally required to at least be prepared to implement Age Verification.
However. It is not set in stone, yet, as to whether Those Manufacturers, and/or Linux Distros, based in the US will be required to implement age verification.
There are many legal twists and turns that have yet to play out.
In fact it may have no affect on Open Source Software, as FOSS, is, in the US, currently considered, legally, as a form of Speech…and we all know how the yanks feel about Free Speech.
Indeed, now that it is out in the open, as to who is behind these laws, there may actually be a better chance that those organisations, that are fighting them, can manage to have this resolved in our favour.