I feel like some of this discussion loses sight of the objective reality that:
A) the organism in an observation belongs to a single taxon at a given level (e.g., genus, species)
B) there either is or isn’t enough evidence in the photograph to correctly label that organism with the taxon it belongs to
As an expert in identification of Taxon A, I see no reason I shouldn’t be able to bump an observation up a taxonomic level (e.g., genus to species) if the answer to B is “there isn’t enough evidence”.
If experts don’t have that ability, then there is no ability for the community to override two users who over-identify an observation to species, even if 1000 observers add a non-disagreeing genus level ID. That would be a significant blow to the quality of the data in iNat.