Heh, had to investigate my own code to check ... was ages ago I made that
The original intention for jopensim auth was to get some (even if very rudimentary) chance for age verification.
So to trigger the auth, the regions (in this case the ones HG users can land on) have to be rated at least mature or adult.
And to get another text for the "Yes/No" question they see, you can currently use a language override for JOPENSIM_AUTHORIZE_HGUSERMESSAGE.
I admit, age verification never has been used a lot and using it for GDPR issues would make much more sense nowadays
So might as well put this on my todo list for next release to handle this a little different