I don't think that's the argument. In English, the words "yes" and "no" are very short. Why? Because they're used often. They're not particularly hard to screw up. They're quick to say and quick to write. Similarly, it's good if a framework can use, sure, brevity, in its more common function calls.

Similarly, in jQuery, the most common function call is one character that's obvious if you mess up. You don't have to go to such extremes as `$`, but you should think about that sort of thing when you're designing APIs, imo.