edit: In response to your edit:
>Making the best web browser is not Mozilla's goal. Their goal is to "promote openness, innovation & opportunity on the Web"
If Mozilla's goal isn't to make the best web browser then no one will end up using their browser, and if no one uses their browser then they wont be able to "promote openness, innovation & opportunity on the Web", no market share = no voice. During the days of IE6's dominance Mozilla got its large user base because it was the best browser available. Mozilla is in danger of hemorrhaging users if it continues making these sort of decisions.
Us "hackers" got Mozilla its user base, we started using it first and convinced our family, friends, workmates/workplaces to switch. If the power users leave, the rest will be soon to follow.