There is one more case, for your list at the end. The names could start colliding when you get to add interaction with a posix system. That is, most of the po

There is one more case, for your list at the end. The names could start colliding when you get to add interaction with a posix system. That is, most of the point of that was for some standards to give a "follow these rules, and you will have an easier time integrating with this standard if that is in your plans." Obviously, if you have no plans to head to posix, they accomplish nothing for you. Similarly, not following the rules doesn't prevent that direction, just adds some extra work. Potentially.