Not all casual observations are useless either. For example, I’ve recently added comments on casual observations of endangered plants missing locations and got responses that the observers didn’t put the location up because they were worried about poaching. Totally valid concern but after explaining how to obscure locations and pointing them to the help info on geo privacy, several of these are now RG with obscured locations instead of casual with missing location. So it can be worth engaging with some of these as they may be in that ‘bin’ simply because of lack of knowledge how iNat works.