Well, I for one find it compelling because the author is right. Which is, of course, the same reason why Paul quoted pagan philosophers in the text of Scripture. (And, mind you, those were actual pagan philosophers, not just people you feel like calling “pagan” because they don’t fit your definition of acceptable Christian.)
It used to be that men inspired by the Holy Spirit would argue with Jehovah’s Witnesses about John 1:1 based on Greek grammar. Now, apparently, it’s sufficient to say, “Well they’re pagans — duh, they’re wrong!”
I guess that kind of debate works for some people… but it doesn’t work for the rest of the world outside the bubble.