As novel as this may seem, most people who regularly program in languages other than Lisp also consider excessively verbose code to be a bad thing. (Hence the interest in refactoring.) If you're dealing with someone who just started programming a few months ago, they don't have enough experience to know why it's problematic, but then, they probably need someone to be patient and helpful, rather than smug.
You can say, "There are some things that are inherently hard to express in some languages that come naturally in others, and until you have experience with a couple different styles of languages, you'll only really know techniques used in your main language. Learning new languages adds new techniques to your problem solving toolkit. It takes a while, but it'll make you a much better programmer in the long run.", and it doesn't make you sound like you're sneering inside.
If you want to make the point that the way their language's object framework is designed makes any nontrivial program in it have a bunch of repetitive boilerplate, say that. Name-calling makes people defensive, not likely to consider new ideas.