Just because something is a "first computing directive", that doesn't mean people do it. If you're capable of remembering hundreds of high-entropy passwords, m

Just because something is a "first computing directive", that doesn't mean people do it. If you're capable of remembering hundreds of high-entropy passwords, more power to you, but that approach doesn't work for most people. Password managers are better than reusing passwords between services, which in the real world, is the alternative.