He's going to wind up with a lot of reluctant, unhappy jurors, ... And if they don't want to be there, they may not listen to the evidence. It's dangerous to force people into jury service.
This is probably the most important phase of jury selection, and jury selection may be the most important phase of the trial, ... This will be the chance for lawyers to see whether these are jurors with an agenda.
It won't escape the jury that this guy is not all there. I'm not sure that makes a huge difference in the guilt phase except for softening up the jury for the penalty phase.