>>People are too complex to be labeled "good" or "bad".

People are extremely complex, and overall, bad or good (in relation to almost everyone's ethical standards).

The sun is extremely complex... but it is fair to call it "hot".

The idea that no one is "good" or "bad" is ridiculous. People can change over time, they can have messed up motivations, or emotional issues, but in the end people make conscious decisions that either are or are not moral and ethical by society's standards.