JUst teasing this one out.
You realize that when I say, "kill himself", I mean challenge the dragon in any way? That any challenge to the dragon, that "forces the dragon's hand" means that the paladin will die.
Yes, I'm not being overly pedantic and writing out "paladin should continue to talk to the dragon and find some way to save the man until the dragon gets fed up and eats the paladin" every time. I'm just shortening it to "paladin commits suicide".
Again, remember, the paladin has NO chance of survival here. No chance of winning this fight. None. We effectively have put a gun in his ear and said, "if you don't leave, you die".
I'm frankly shocked to be honest, how far people are willing to go to place moral blame on the paladin. It's rather horrifying to be honest.