He never had a chance of anything better than what he got. The government made him an "example" to try and get one over on Elohim City and the various other "white identity" movements that were surging in power at the time, and I'm sure you don't need three guesses to know why they were.

I don't believe in the theory that he was being used by these groups as a patsy/weapon, but he certainly had connections to them and they wanted to scare these guys into not operating in the open as much as they were.

Probably because they knew if white guys found out they had options instead of being forced to bend over and deal with all the niggers, women, Jews and other malcontents in America they'd be facing legitimate resistance soon. Which is also why these groups don't get mentioned at all when most people talk about it.