According to the freewill defense, God is not responsible or blameworthy for the harmful decisions that humans make. He doesn't "cause" their choices or "determine" their choices.
Suppose I have a college roommate who's a recovering alcoholic. Suppose I take him to a bar. I place him in a tempting situation. I know he has a weakness for alcohol, but I don't know if he will succumb to temptation. Suppose there's a 50/50 chance that he will either succumb or resist.
If he does give into temptation, it's not because I "determined" the outcome. And as freewill theists define causality, I didn't cause him to drink.
Was I blameworthy for exposing him to that gratuitous temptation? Even if, on this occasion, he overcomes the temptation to drink, was I blameworthy for putting him at risk? Was I acting in his best interests? Or was I playing to his weakness, thereby exposing my roommate to harm?
Is it not my duty, as a friend, to protect him? Even if I can't do that all time, isn't that something I could and should do in this situation?
And if he does give into temptation, am I not complicit in his downfall? Was I not instrumental in his downfall?