It's always been written in an oddly informal way. When I first read it, I did a double take and had to check if I was on the right domain, because I didn't expect it from Apple, of all companies. Over the years, it has been tightened a bit (the famous "If you run to the press and trash us, it never helps" line is gone), but it's still quite relaxed and personal, which is a tone that is somewhat at odds with the strictness of the rules.