While everyone already knew, the act of public announcement is one of great meaning and catharsis. Coming out is an important event for a gay person, and for a prominent person such as Tim Cook, for our society as well. As an ally, congratulations for having the courage to be who you are.
And like you say, it takes courage to be who you really are. To not feel the weight of your mask every day. For myself, I think it would be false courage in this day and age to 'come out' as a pedophile. 'Pedophile' here means that I feel emotionally and sexually attracted to children, just as gays have that attraction to men. A lot of people are immediately repulsed by that word, and just assume you are a monster and a child abuser/rapist. I think those stereotypes mainly exist because pedophiles are invisible in our society. It is very likely that everybody knows somebody with that orientation, but because it is so risky to 'come out' nobody recognizes that pedophiles are very regular people too.
I have come out to some very close friends and my parents, who luckily all accepted that I am who I am (I live in a European country, so that might help). I'm a bit gay as well, and I have a 5+ year relationship with my boyfriend, who also is a pedo (and somewhat more gay than I am).
Still, every time when I receive a compliment or encouragement from someone, a thought flashes through my mind: what if they knew who I 'really' am?