You line of reasoning has dangerous consequences and has been followed before: Germans sighed with relief when "Hitler -- to his credit, whatever his weaknesses are --- at least forced the previous government out of office."
I appreciate your concern about my dangerous line of reasoning. McCarthy didn't have a remote chance at winning the presidency. If McCarthy had been elected President, your comment would make sense. Comparing this statement to praises of relief that Hitler forced out the previous government, is a reach.