Critical views are always needed, even if I do anything which it is related to public, people are not bad if they talk against me if I do something weird. Like the time which spent on flag button's shape, I am also familiar with codes and building websites, not a pro but I can tell you, those buttons did not needs an Einstein's time and brain, so take it easy man, critical views should exist for improvements or changes even if nothing will change people are allowed to say the things they see.