Lots of things are bad and good simultaneously. It's not additive where you add the good, subtract the bad, and get a score. Thomas Jefferson is a great example.

Jefferson was brilliant in so many ways. Declaration of Independence, Louisiana Purchase, Jefferson Bible, Notes on the State of Virginia. But he was also terrible with money, overspending and failing to pay his debts. He could not abandon slavery. He was relatively shy and softspoken, and used those characteristics in a kind of pompous, entitled, and frankly childish way.

Jefferson was good; Jefferson was bad. These statements are both true, and are not mutually exclusive.