I’m answering your original post, iNat stuff answered it in many other topics, I don’t bookmark those so I can’t link them but you can search them up, there’re many about annotations and many about specimen count in them. There will be no fix as it is not a problem. You can leave comments for observer to split them up, and observers often do that, but nothing more than that.
https://forum.inaturalist.org/t/use-computer-vision-to-annotate-observations/3331/
https://forum.inaturalist.org/t/what-is-an-observation/3367/