Meh, call me Fred then.

Reflectors, I don't personally care one way or another. It is rare I ride at night, so it is rather irrelevant anyways, but unless I've got a very specific reason to take them off a bike that has them or put them on one that doesn't (say, a bike tour in Europe where they are legally mandated), it gets ridden how it came.

Dork discs? Love em, I've seen enough times (once) where debris got tossed into a drivetrain and knocked the chain off despite proper deraileur alignment. Plus it makes me feel good that I'm not a self conscious nitwit that thinks a piece of plastic speaks to my manhood.

As to that article, a list of ways they may not work is far different than them being completely ineffective. All one must do is watch a bike cross the street perpendicular to you to note their effectiveness.