While I'm really impressed by the work in this paper (and codebase) I cannot stress enough that having minor as examples is definitely not a good idea on so many levels!
i appreciate that "I cannot stress enough" is somewhat idiomatic, however it strikes me as odd to announce this but then not offer least some of the specific reasons you believe this.
there are aspect of copyright law, and ownership of that image (this is work done inside google) that a minor, which eventually be an adult have no control.
Additionally, minor images can be abused (I'm leaving at it, but you can assume that some AI breakthrough in generative imagines can be abused)