i suppose every system is allowed to decide what’s important to them and define their own terms of service. for example, iNaturalist seems to give quite a bit of thought to copyright and letting users define their own copyright terms, whereas it seems QuestaGame simply says that everything submitted through their system will get a CC-BY-NC license (although strangely, it creates data in iNaturalist with CC-BY licenses on the observation and CC-BY-NC-ND on the photos, though that’s probably off-topic).
it doesn’t seem like iNaturalist specifically says anything about AI in their Terms of Service, but it doesn’t seem like it’s doing anything with its AI that appears to be nefarious or unethical or even controversial. it’s not like the case of IBM’s facial recognition AI (see https://abovethelaw.com/2019/04/in-your-face-how-facial-recognition-databases-see-copyright-law-but-not-your-privacy/), where there was a clear privacy angle to consider. (i suppose, though, there’s an argument that could be made that there are greater considerations than privacy: https://www.vice.com/en_us/article/59ydmx/copyright-law-artificial-intelligence-bias.)
so personally, i don’t see why there needs to be policy around opting in to training of the iNaturalist AI. (but maybe i’m missing some angle?)
that said, there does seem to me to be a little bit of a gray area regarding whether iNaturalist should use photos / observations to train the AI where the observer has reserved all rights. the TOS does grant iNaturalist certain rights regardless of license to do certain things, but it may be a bit of a stretch to include AI training into that list of allowed things… but that may be starting to stray off topic…
a couple of other wandering thoughts… the questagame_bee user that’s the curator in the QuestaGame project has a really creepy looking profile picture (in my opinion). you may want to change it. i assume it has access to see unobscured coordinates, and i assume you’re using it somehow to feed data to the QuestaGame Bio-Expertise Engine. i didn’t check either way, but you may just want to make sure obscured coordinates aren’t accidentally revealed somewhere in this chain, if things are working the way i think they might be working… oh, and this post also seems to talk about some sketchy practices: https://forum.inaturalist.org/t/reducing-sightings-to-questagame-group-account-and-update-on-sync-account-system/2432.