I think he did the press conference and the interviews not for you and most of the country, he did it so that he could create the narrative for his future employers. Instead of them hearing rumors and gossip about him, he gets to go ahead and put all his cards on the table.
He was at the Senior Bowl and was surprised how many people actually knew. Apparently he was treated as well as anybody else. Do you think there is any chance NFL teams didn't know? Seriously.
Here's someone who was pretty much openly gay and was treated well by all accounts. Enough with the press conferences.