You are being down-voted not because of some imaginary "purity cycle", but because you discard without reasoning a vast amount of evidence to the contrary of your hypothesis.

You've heard of the saying that extraordinary claims require extraordinary evidence? Holding a hypothesis of water-vapor from air travel being the primary driver of warming trends is extraordinary.

Invoking the oft-repeated "do your own research" rhetorical crutch and referring to scientific consensus as "hype" doesn't help your case.