irritation is a motivation without financial incentive.

I suspect you're right, and I find it to be so sad that anyone could read a fairly well-structured rebuttal to a throwaway conspiracy theory to be evidence of someone having a vested interest.

You're making a value statement about two different positions. Without having adopted such a value statement, I poked at an outsized response. You would need to say why it's a conspiracy theory, any why it's well-structured.