A "private prosecutor" is new to me as well. Why don't you describe what it is since you were the one who brought it up. I never heard of such a thing.
It is all clearly described by the lawyer in the Rumble podcast. If you're interested to know what it is, all you have to do is listen. That description falls in the first 20 min of the podcast (after the intro stuff). Why should I spend 20-30 minutes typing up a description of something for you when it is already out there for you to freely access.
This isn't the first time you pull something like this. You seem to think that because someone introduces a topic that somehow it is up to them to explain it all to you. If you can't be bothered to learn about the issue in question, that's fine, but why would you think that it is up to me to teach you?