I'm not calling the author an expert on sugar babies. I was providing an example to show that it is illogical to dismiss everything a person says, even if they have said something outrageous in the past.
Absurd: wildly unreasonable, illogical, or inappropriate.
It's not detrimental to discussion to point out an absurd statement. I'm not saying absurd in order to be rude, but pointing out that it's a logical error. It's not a poor starting place if my goal is to inform others that the addressed statement is in fact absurd. Since that is exactly what I was attempting to do I'd call it a very reasonable starting place.