Before we go too far down this "unfair" road, the producer of Words Have Meanings would like to remind everyone that there's a difference between "fair" and "equitable". "Unfair" is a dangerous word to throw around game shows.
What Adam and Jason are referring to are the format elements common to all game shows (in varying degrees, of course) that make them entertaining television programs as opposed to standardized tests. Yes, when the first three rounds are all worth one point, and round four is worth four points, that's a stupid, lazy design, but nevertheless, it is "fair".
I'm having a harder time understanding what Daniel thinks is "unfair" about Wheel of Fortune, but it seems to revolve around his problem with certain very specific rules (losing the Million Dollar Wedge when you hit a BANKRUPT) or game elements. He's also insinuating some things about the difficult of the bonus puzzles that I do not believe are based on fact.