I think if someone wants to make such an unpleasant and demonstrably false assertion, let him or her make it, and I'll respond with whatever small courtesy it deserves. Talk about your affinity for Chekhov, whose work you've adapted for stage and screen. I like his stuff. In Mamet and Chekhov, people don't say what they mean, but it's often tragically revealing, anyway. Nobody ever says exactly what they mean.
People only speak to bring about a result.
They say what they understand to be best calculated to get what they want, which is a very different thing. I think that, coincidentally, it may be true. That's why people speak. Anybody who ever does is lying to you. If people said what they mean, we wouldn't have dreams, we wouldn't have psychoanalysis, we wouldn't have anger or sadness or repression.