Increasingly identification to a species level is requiring either microscopic, or even molecular level investigation. Or in the case of rodents an ability to look into their mouths and study their dental patterns, don’t recommend trying that with a live vole, can’t even picture it with a carnivore.
The point is if it is a microscopic examination of a bryophyte, or the need for a molecular examination of a mushroom it is not something most naturalists can do in the field. If the organism being identified is in a new taxon to the identifier they may not realize that the trusted, dog eared guide is facing becoming obsolete?
How should people be made aware that you can nolonger use visual identification with certain groups? Had I not spent a summer looking at the achenes of sedges with a microscope, I would have felt I could identify them in the field.