Don't get me wrong, I totally agree that using pre-existing code in most situations is far preferable than re-inventing things, especially when it comes to incr

Don't get me wrong, I totally agree that using pre-existing code in most situations is far preferable than re-inventing things, especially when it comes to incredibly uninteresting "plumbing" code like DOM manipulation. But instead of referencing intelligence, the justification should be something like "someone already spent the time and effort optimizing something I have no interest in doing myself". Just like it has been shown that praising kids for their intelligence leads to worse outcomes, we should not be artificially limiting ourselves based on intelligence.