This whole notion of a razor being too sharp or overhoned I think is the wrong terminology. If you hone a razor enough you'll turn it into a toothpick, now thats overhoning.

I think once the edge reaches a certain point at which its honed to perfection from there on its just being destroyed and I would rather say the edge is being ruined not "too sharp". Too much of anything is a bad thing. A starving man can overeat himself to death or drink so much water you'll die from that also. Its all a matter of excess.

I think when you say too sharp and overhoned many get the idea that gee, its so good what I've done here that it won't give me a good shave. We just need to tell the dude hey, you ruined your edge.