I can sometimes see the appeal of conspiracy theories.
Think about it. He’s called Captain Hook, but there’s no way he was born with the name Hook. He was born with hands. And what character 21 years earlier and was about 21 years younger? Long John Silver’s coxswain: Mr Israel Hands.
There’s something compelling about connecting the dots and seeing the pattern, even if it is deeply stupid.
This seems to be more an example of head canon or even fan fiction rather than conspiracy theory.
I think conspiracy theory requires you start from a real event and then attempt to shoehorn stupid, unsupported explanations for it.