I can't speak for op and evil is subjective - If I have to take a stab at their thoughts, it would be along the lines that he was being a useful idiot for an entity whose goal was to harm a society. You can debate those points; what questions he should have asked, if what the Mueller report says about his sources is true, if he had any actual malice - evil is too strong a word for my taste, as I use it for sadism. He certainly went for retribution however. I don't think we'll know his motivations for sure while he still has legal exposure.