Also, I’d lightly disagree with some earlier comments that it’s impossible to tell when someone is doing this. Of course it can’t be known with 100% certainty, but if one specializes in difficult taxa, I think it can be quite obvious and is a reasonable inference. I would never assume this based on the presence or absence of the CV badge, but for semi-cryptic species without good keys, the only way to make a good ID would be with a lot of time spent reading and looking through a really large number of examples.
When you specialize in one of these taxa, you know exactly how much time and effort it takes to learn to ID them, and you generally come to recognize the small handful of people who are capable of making a good ID. Most of those people ID systematically, focusing on a difficult taxon or group of similar taxa in any given session. Many of them use CV instead of typing out the names just to save time, and I’ll probably start doing this myself soon. Yet if I click on someone’s profile and it shows that they always/often ID to species while rapidly jumping between difficult taxa with no clear pattern (jumping from morels to red Russulas to difficult insects), that tells me they either have a truly rare amount of knowledge and many years of experience, or they are an overenthusiastic (often new) identifier who thinks they can ID by CV and general appearance. I think one of these things is much more common than the other. Then there are the even more obvious cases. If someone IDs a pinecone, acorn, or piece of wood as a morel (I have seen all of these), I can safely infer that they were blindly following CV, as it would be hard to make that sort of mistake with a guidebook, key, or really anything else.
I’d be lying if I said that sort of thing isn’t sometimes frustrating, but it’s generally people who don’t know any better and have good intentions, and correcting the errors that result is just part of the game. Even without CV, these types of identifiers might be speed-IDing with outdated keys or based on misleading/broad common names (like “black morel” for Morchella angusticeps or “chicken of the woods” for Laetiporus sulphureus). Of course I do wish there was better onboarding with a bit more emphasis on what not to do, as it could perhaps reduce the scale of the problem.