You have me a bit confused. You say that I could have picked better examples, but then pretty much agree with me wholesale. So it seems I picked exactly the right example, at least if my intention was to support my own point.
That point being that languages such as Perl, Php, Ruby and even Python is relatively minor. I'll claim that any programmer who is competent with one of these will easily be able to transition to one of the others. There may be reasons why people don't always do this, but I don't think they are intellectual.
Yes, I agree that your intention is apparently to support your own point. In trying to win the argument game, you're missing out on the deeper point, and an opportunity for professional development.
I've learned quite a bit from working in different languages. You may not have, but that doesn't indicate there's nothing to learn.
That point being that languages such as Perl, Php, Ruby and even Python is relatively minor. I'll claim that any programmer who is competent with one of these will easily be able to transition to one of the others. There may be reasons why people don't always do this, but I don't think they are intellectual.