Often with species the photo comparison works quite well, and the species are identified the correctly. However, many people who think they see a species sometimes get it wrong because the photos look similar. In person sometimes it’s more obvious.
In general this method of community ID has the one flaw of people agreeing with an identification without solid field experience, or knowing that there are similar species. Once a photo is labeled as research-grade, it goes into the research grade pile of photos, then other people think that is the correct identification, when sometimes it is not, and then the problem snowballs.
For example a small Lupinus nanus can be confused with Lupinus bicolor, and a large Lupinus bicolor can be confused with Lupinus nanus.
I think that in the suggestions there should be a yellow exclamation point Or a red triangle or some sort of symbol that means often confused with, then list which species.
As it stands it’s probably going to take a year or more to go through all of the lupinus bicolor observations and find all of the mis-identifications.
The Jepson manual for example in their treatments of species will have a note about “sometimes confused with.” So it could be something like that.