That's only because he's a drooling retard who probably knows the character best from Challenge of the Superfriends, Superfriends, and Adam West's run. I liked them as a kid too, but they're very much the exception, not the rule to the character. It's baffling too, since the Tims/Dini show and Burton's movie was around the time he was a kid and that shit was similarly dark.
My guess is those confused him, since he can just barely grasp the concept of Bing Bing Wahoo and McDonaldsland commercials. Confused Bob is angry Bob, hence why he's mad all the time, since only infant tier shows are things he can understand.