Your post is proof that he indeed did yank your chain, but I doubt that was his specific intent. I tend to believe his opinion is real because I've heard it, with some variation, many times before. Moreso when I was that age (in the '60s) than later, but my contact with that generation is somewhat limited....at least with guys.
That said, Hearing it from older guys doesn't surprise me, however, I'm a little surprised to hear it from a young guy. It makes me wonder if it is flourishing?
Your rebuttal is reasonable and well thought out, but it makes me believe you're a slut and should give me directions to your house immediately.