Having actually been a little kid in the 70s, I can say at least some of these kids shows weren't as surreal as the author of the article thinks they are. Then again, the internal state of a 7 year old is a pretty weird place to begin with, so who knows.
I'd forgotten all about Banana Split, and even now the memories are almost entirely made up of impressions rather than the more typical "internal movie projector" we all normally remember with. I can only remember that I watched it during summer time, when I was intensely bored, during some "Krusty the Clown" - type kids show. Other than that, nothing.