I hardly invented the idea that pedophiles might argue based on their apparent self-interest.

True. Poisoning the well has been well known since the Greeks.

And it's still the best explanation I have as to why so many pedophiles are pro-contact and hardly anyone else is.

Why do you even require an explanation to this?

[And here I am even supposing it is true, but I have never actually seen this claim sourced]

That you seek an explanation to this is again proof that you are not dismissing the argument, which would stand regardless of who makes it, but the arguers.

You are a threat to free speech. Everywhere, and for everyone.