Doubtful.

Yes but also no. Bit flips will happen unless you have rad-hardened computers but apparently, bit-flips are not really too problematic for LLM training. I guess when correct answers are optional, correct buts are as well.

Now instead of asking to verify age, make the parents input the age bracket and you reinvented parental controls. The correct way to protect children.

Please see edit of my comment. Since it seems my point did not get across, I elaborated. Of course there are plenty right now since there are no barriers yet.

While it does not affect them directly, it is unlikely most app developers will give significant effort to only support a small percentage of Android users running custom ROMs. So while GrapheneOS users will be able to install apps, there will likely not be that many apps to install.

Edit: What I mean is that most applications will have to choose to either agree to google terms and identify themselves, or develop only for custom ROMs, or stop developing altogether. And I don’t think many will choose the 2nd option. Also, 1st option may not be available if google does not like your app.