This theory is absolute delusional garbage.
A huge mob chased Kyle after he shot this man, even though they knew he was armed with a semi automatic rifle and they overwhelmingly were not armed themselves.
Were they all suicidal?
A man with a skateboard soon tried to club him with skateboard and stomp him, despite kyle having the rifle in his hands. Was he also suicidal?
How about the guy who pulled a gun on Kyle despite Kyle actually aiming right at him, who got his arm almost blown off. Was he suicidial?
None of these people were suicidal, they didn’t even think they were risking their life. They all thought kyle was a boyish kid who probably didn’t know how to use the gun well.
Your list of “the only things we know” is completely wrong.
He hung out with two friends the whole night. One of them fired a warning shot in the air just before kyle was lunged at and fired.
There is video proof of this, and it was established fact in a court of law. Kyle had no way of knowing if the shot was in the air, or was aimed at him, whether it meant others were about to also shoot... Maybe Joseph lunged when he heard the shot. Maybe kyle wouldn’t have shot if he hadn’t heard the shot. Who knows.
I did see the video of Joseph after he was shot, his face was one of total disbelief and terror. He didn’t look to me like someone happy to be dying. Also, he couldn’t have known if kyle would shoot him fatally, and he sure tried to grab that gun to stop kyle.
You also somehow didn’t mention that he was convicted of molesting children, spent major time in jail, and somehow dismiss his behavior as a sudden episode of mental illness. If he was that nuts his friends wouldn’t have hung out with him. They followed him during his chase.
I know that he molested underage boys. I guess I failed to add that fact because I didn’t think that it would have factored in whether or not Rosenbaum wanted to die. Also, that theory may be completely wrong, but it’s not “absolute delusional garbage”. Mentally ill people can and do at least try suicide.