The remedies to disingenuous argument include:

a) authenticated signaling,

and

b) argument diagrams.

Argument diagrams prevent total con men from subverting formal debate.

Authenticated signaling can be done by professional dedication to academic achievements.

E.g. I argue in favor of anti-realist philosophy of science.

Angry people on the Internet claim that I am not sincere because no intelligent could (they claim) believe in anti-realism.

And then I trot out a long list of the textbooks I have written, all of which are dedicated to showing that Feyerabend and Quine and Martin have convinced me of anti-realist philosophy.

That’s the theory, anyway. In fact I have not written even a single book, much less an academic textbook.

So at the moment, I am reduced to saying, “I can’t prove that I’m a sincere anti-realist, but here are books written by far more accomplished scholars, all of whom are sincere anti-realists.”