I see signs of this happening all the time, especially when I chat to some newer subs who've had bad encounters here. The biggest problem seems to be straight out impatience, either, as others have mentioned getting in with someone incompatible but also the other frenzied aspect is wanting to test out everything at once.
Over the years I have mentored a few couples, assisting guys with doming their partner. One in particular was really problematic as he had spent years looking at kinky porn and reading stuff. His wife while keen was very new to the idea and needed to be treated carefully, he on the other hand wanted to race ahead into all kinds of things that I knew would most likely put her off. Sure enough, after a month or so he got impatient and pushed her too far. I had a couple of chats with her afterwards as a kind of debrief to help her with ideas on how to handle him going forward.
My advice is always the same, dial down the enthusiasm especially when it borders on desperation. If you can't control yourself you stand no chance of controlling someone else.