Yeh, I have not exactly figured out why the state did not want to call him. He is a nasty fuck though. He was out on bond, for among other things, breaking his girl friends ribcage. It is hardly coincidence that all of the shootees were people who had extensive histories of hurting people and seemed to go that route when finding opportunities. Rittenhouse had a history of cleaning grafitti and fantasizing about being an emt so there is that.
I know the defense can not go into their past criminal background but the state may not have wanted to put him on because he is just comports as being too scary. Plus he was demanding plea deals on his other crimes in return for favorable testimony which s always risky because they start producing testimony that the defense trips them up on. That happened with GrossKrotch. They gave him a waiver on the gun concealed carry with no permit and some other stuff to testify, then he cut the prosecutors balls off and said he was pointing his gun at Ritten when he was shot.
Also, going all the way back to Jacob Blake this is all supposed to be about white supremacists going after mostly peaceful blacks. Freeman is black and is a scary person who busted his girlfriends ribcage, and suprize, surprize, is caught on video looking like he is trying to bust Rittenhouse's for sport as well. I guess he was too much of a walking disaster for the prosecution to try to use him.
In other words. I don't know. But it is pretty strange to have a witness/"victim" so deeply involved in the events of that night (rittenhouse took a shot at him to defend himself) that neither the prosecution nor the defense wanted on the stand. The public may just be learning his identity but the prosecution and the defense have both known for quite a while -yet would not use his name in court when referring to him.