And the judge immediately halted the trial, reamed out the lawyer as being unimaginably unprofessional, and threatened that he might toss the whole case if the prosecutor ever insinuated something like that again.

yes, and there is a high chance that with either a less vigilant judge, or a less caring defence (see: public defender), it would not have been stopped.

The point is: this case was televised to millions and he STILL questioned it.

The point is that the DA in that case was incredibly unprofessional across the board, and this was just one of many bad decisions he made.