That's true. I can't know how he feels. I was simply speculating. That's why I said "I don't think he's ever come to terms with what happened" - the words "I don't think" were meant to indicate that it was only my opinion.
Quite understandable. However, if you read autobiographies, you will find that actually it is quite common for people to include horrible episodes from their past in them, and to share how they dealt with those traumas.
That said, I do not expect Don Henley to do so. I think - though of course I have no way of knowing - he might feel the same way you do about it.