You know, I've seen a number of Uncle Bob talks where he emphasizes professionalism and every time he does I envision interactions like you've described. But every time I hear this I think to myself, well he's in a unique position because of his brand and companies seek him out for is skill set; he has the luxury of being professional.
You've added the qualifier he never seems to add, that someday you might not be in the position to act professional. This is a sad but accurate commentary on the current state of things in our "profession".