It adds some additional entropy without making the words themselves longer. This both helps when communicating over an imperfect communication channel, like tal

It adds some additional entropy without making the words themselves longer. This both helps when communicating over an imperfect communication channel, like talking in a noisy place. A minor benefit is that references with words like "this" are less ambiguous when gendered, and you can unambiguously reference multiple things as long as they have different gender