Yeah, I'm beginning to suspect David is writing the gay companion. Though, I can't remember if he was the one who said that he's writing a character he's been wanting to write for a long time and that one of the characters is struggling with their sexuality. If I heard wrong, someone please correct me on this.
You are mixing things up.
David never said he was writing a character struggling with his/her sexuality. That's people taking something he said in his blog has being in the game while he was just musing on a question asked him.
He did say that he wrote, last year, a follower he wanted to write since he joined BioWare 15 years ago. Most people believed that to be Cole. All the writers knew he was going to write that character when they did the "character distribution", so it was probably a character idea he brought up often.