One problem I kind of have with the Kroffts right now is, apparently, they're both a couple of big lying lie-faced liars, that I don't even know what to believe of what they say anymore.
Examples:
In an interview on YT that was taped in 2000, Marty mentions, at one point, that he and Sid used to send Brian Epstein a 16mm print of H.R. PUFNSTUF to him in London every week because The Beatles wanted to watch the show... Epstein died in 1967, and H.R. PUFNSTUF didn't even start till 1969.
Both Sid and Marty revealed a few years ago that they didn't come from a family of puppeteers like they claimed to have for so many years, and that their father was, in fact, a clock salesman and not a puppeteer, that the story was made up by a publicist of theirs because he/she/whoever thought it made them sound more interesting to the public.
Also, for years, they had insisted that the name "Pufnstuf" was derived from a combination of "Puff the Magic Dragon" and "all this other stuff that would be happening", thus, "Pufnstuf"... but NOW, after all these years, Marty has FINALLY admitted that yes, "Pufnstuf" came from the slang term for marijuana - "Puffin' stuff".
So yeah, I really don't know what of they say to believe anymore at this point, because I'm not sure what they're saying are made up lies.