Funny? Yes. But I could only watch so much before it became absolute exploitation. It wouldn't have been so disgusting (in the end), if the show actually demonstrated any desire to understand the origin and nature of these phobias, instead of just thrusting these people into the limelight to be mocked like a freakshow.
As silly as they seem, to those of us without phobias, they are, in some cases, completely debilitating to the people suffering from them.
The object or catalyst for the phobia itself is really inconsequential, since it's usually a mundane object that imprints itself on the phobic. What's most important is understanding that these people need therapy to overcome these fears, a sort of reverse engineering of the phobic reaction. It's sad to see this treated as a sideshow, and it does nothing to help dispell the negative stereotypes associated with psychological disorders. Phobias are treatable with Cognitive-behavioral therapy; they take time, but they can almost always be minimized in some way.
(Note: I have psychologists in the family, I am not an expert myself.)
mrC