Sparky had some good ideas, and then rapidly fell into madness by believing his own hype in extremes not seen since L. Ron Hubbard. The M113 is an example of this - yes, it's a little more air-portable than similar AFVs, but then he started to really dive off into the hype he himself created for it. And he's honestly the only person who believes it at this point (at least, God hope so).
One of the problems is that IIRC one or two of Sparky's ideas have been good, but because they get mixed in with the rest of the junk they get ignored (can't remember what they even were).
One thing a friend of mine proposed is that someone share an idea with him that on the outside looks good, but has some flaw that makes the whole thing really really dumb, and watch the sparks (pun intended) fly. As far as I know this was never actually attempted.