[quote=@Dervish]And how many GMs will willingly say they are a flake or really bad at running a game?
[/quote]
Hard to say, but for example I'll use myself. I can be inconsistent, have slow pacing, and ultimately a lot of my games falter due to a lack of focus. I would be straight up with those flaws I hold if asked about what they can expect from me as a GM. I have no reason to hide it; it serves little purpose when people can look around at the base examples.