So, some appearance of impropriety is ok because there could be some other appearance of impropriety that could be worse?
Since many things can lead to an
appearance of impropriety, what often happens that a thing and the opposite of that thing can both appear improper. In such a case, it is better to go with mere appearance of impropriety rather than appearance and actuality of impropriety. I.e., in this case, it is better to have a jury that has a bit more white people than the county at large rather than actual impropriety of having jurors who knew the decedent.