Earlier quoted context omitted.
Do you think they care if you waste your time on that? The board has proven to be incompetent for decades. The government of SF is fundamentally broken.
I think that your comment is counterproductive. Even if the board wouldn't listen today, if more people wrote, more people would feel a sense of engagement with their city, thus more people would do other things, and more things would change. Also, just how much time do you think this would "waste" out of your day? You could do it sitting on the toilet.
There is no evidence that having people voice their concerns to unconcerned idiots is in anyway productive. If anything, talking to deaf ears makes you feel like you have even less of a voice.