I never said there were any of those things.
But there is a difference between someone stating they are straight because as I said above that is the presumed default in our society. For example, if I'm at work and someone asks me how my weekend was and I say something like "Ed and I didn't do much. Just hung out at home", no one would think twice about it. But someone who hasn't publicly (or to their coworkers or friends) stated that they are gay, has to "self-filter" and rather than being able to answer the question naturally (like if I said, "Sally and I…), they have to make something up or else leave out the info that they spent a pleasant weekend at home with their SO. Someone stating that they are gay to friends, family, and coworkers (or in Tim Cook's case, publicly because he was already a well-known public figure), just means they can turn that "self-filter" off and talk about normal friends and family stuff without always having to watch what they say.