IMHO, Rittenhouse should just go about his life and stop pretending to be bigger than he is.
If he wants to sue, fine, but he doesn't have to make a production out of it. He might want to prepare himself for the possible civil lawsuits that are coming his way -- wrongful death of those two jackoffs.
That said, this analysis by an attorney explains the concept of "self-defense immunity" and how that does not apply to KR. He explains how that legal concept "self-defense immunity" is a common enough part of state law, but it's buried under related WI law. Gets into the weeds a bit on all that. But he goes into a fair amount of detail on the LIKELIHOOD (low) that the families of the two dead jackoffs and Grosskreutz (the moron with the vaporized bicep) would go after KR in a civil suit. He also explains how KR could counter-sue if the two dead jackoff's families sue. All per Wisconsin law.
The article was dated last November, and the attorney says he's not aware of any civil suits against KR.
All the same, KR would do well to just STFU and get on with his life. He's starting to sound like a smug little pimp.
https://legalinsurrection.com/2021/11/rittenhouse-can-kyle-avoid-being-sued-under-wi-self-defense-immunity-law/