I had one recently where the observer uploaded a wide shot of some grass ID’d as a bee. I ID’d as grass since I couldn’t find any bee. He insultingly told me how I was ruining the data and told me where in the photo the bee was (I still had to look for it, because it wasn’t where he told me in the photo). So I changed my ID, but he still proceeded to insult my contributions. I can’t flag him though, because he deleted the observation and blocked me.
So, yes I really don’t like it when observers delete observations. Complete waste of my time. Honestly it’s getting so frustrating dealing with some observers complete lack of understanding regarding mistakes or the amount of time that identifying takes, that I’ve pretty much stopped. I still ID a bit. But lines like “misidentifications are of no value” don’t really make me excited to add ID’s like I used to.