Lex Luther is the good guy. His whole gripe with Superman is that he brings supervillains to metropolis simply by being there. He’s right. Superman may catch the occasional purse thief but the majority of what he “stops” was directly or indirectly caused by him.

This also applies to the avengers. They’re lauded as heros for stopping Ultron, a being they created and set loose out of pure hubris and incompetence. They destroyed an entire country. Zemo was right.