I would say that the torah was given on har sinai the 'smallest' mountain to show that haughtiness and Torah dont go together. It is also no coincidence that moshe rabainu was the most humble of men and only through him could the Torah be given. The question was what is wrong with being haughty. So this answers it by saying he will not be able to learn Torah. Since torah and haughtiness dont go together. Do I really have to provide a source that sinai is the smallest mountain or that Moshe rabainu was the humblest of men. Cant I give your readers a bit of credit that they are aware of these facts. Do the voters really think everyone is also ignorant as themselves.