I'm happy for Ventura. He was defamed by Chris Kyle (CK), in Kyle's effort to publicize his book and make money, and he owed Jesse restitution. That was proven in a court of law.
If CK's story had been true, he could have gotten many people who were at the wake and in the bar to testify, but that didn't happen.
Jesse got the former seal who owned the bar in question to testify that no such incident occurred in his bar.
One of the two is lying, and it is apparent and has been proven in court that CK was the liar. And yes, Jesse needed to go to court to prove it.
Here is a video interview where CK talks about the incident, in the first minute he looks down 3 times as he gets ready to answer, like he is ashamed of what he is about to say.
There is a law against slander and defamation of character for a reason, and we should not give people a pass when they do it. Rick Pitino, a college basketball coach, cooperated with police and recorded a woman trying to extort money from him, trying to say that their casual sex encounter was a rape. She's was convicted and is doing time now. That is the only way to discourage women from crying rape when it was not a rape. If you can, prove it was not a rape, convict them, and send them to jail for lying to the police. The same is true if they use it as a threat to extort money from a celebrity.
In this case, I think CK was trying to make a name for himself to publicize his book (last I saw, he made $6 million on the book), which was published by Harper Collins which is owned by Rupert Murdock's company News Corp. It's big business, but there is a line between right and wrong, and CK crossed the line. Now he has to pay the price. Jesse has lawyers to pay.