“At least it’s within the realm of possibility.”
So are ten-headed space aliens. If your defense of anything pro-Obama is that it’s possible but you go after any anti-Obama theory as crackpot, that’s a double standard.
I do have a different attitude towards something involving a massive and implausible conspiracy theory. So in that you are right.
The above theory, while I personally don't find it convincing, is at least more plausible to me simply because it doesn't involve a conspiracy that would be impossible to cover up.