Notch Minecraft was not invited to the event for his comments on social networks, which contribute to transphobia, homophobia, racism and bigotry. This is not a value with which Microsoft and Mojang identify themselves and do not represent Minecraft. Microsoft at that time his name is removed from the game.
Notch around for a long time say, the amount of depression and loneliness, as he himself confirmed. Twitter regularly delivers its extremist contributions.