Maybe the defense wants the trial broadcast so if Chauvin walks, there's no ooking about how the trial was thrown by the prosecution or whatever other shit these people cook up to explain the fact that they don't understand how the criminal justice system works.
For example, the Trayvon Martin case was televised and had I not seen the prosecution's (weak) case and the defense's (proficient) countering of said (weak) case, I might still be laboring in some SJW mental gulag where Zimmerman hunted down and killed a black child for the crime of buying skittles, or whatever.
Cases like this turn into a huge national Rorschach test where everyone has their own version of events that may or may not bear any relationship to facts. Ask 20 people where Breonna Taylor was when she was killed and you'll get 20 responses.
But trials like this, the Trayvon trial, the OJ trial, and so forth are an opportunity to get the facts (and/or "facts") of the case into the public record.
And maybe Rachel Jeantel will be the lead witness for the prosecution again. That was fun.