I tend to empathise with people in these situations.
First of all, you don't know what he's thinking. He might believe it himself, but for some reason, he doesn't want to admit it, maybe because he's embarrassed.
Secondly, you don't know just how long he's been living with these symptoms without treating them, so it could be "normal" to him, just because that's the life he's been used to for so long.
Finally, he could just be frustrated that he was admitted without his consent, so he feels like the situation is kind of out of his control.
Someone I know attempted suicide years ago. During the attempt, she messaged someone on this forum we were all a part of. The person forwarded those messages to me without her consent, because she was in New York, so she couldn't call 000.
Sure enough, it was the real deal.
A few days later, I e-mailed her to check in on her. She said that for the first couple of days, she was very angry at me. Her mother was at home, and had no idea what was happening, until the paramedics arrived. That must have been difficult for her, to have her mother there.
She realised, though, that it was the best thing for her.
Maybe he will too.
Whether or not he acknowledges it, the fact remains.. you did really well, Talita. All the best x.