That’s a really bad read of Milton, which is unfortunate because Satan, being barely in the actual Bible at all, is effectively a Milton character. In Paradise Lost, Lucifer wages a war against God for the unfairness of God making himself king of heaven and earth, but then upon his defeat he sets himself up as the absolute king of Hell. He loathes humanity because he sees himself as a superior being who should rule them by right, but also demands equal footing with the omnipotent being who created him. It’s summed up in the fact that one of his primary stated goals is to try to show the hypocrisy of God, because he actually demonstrates massively hypocritical behavior at almost every conceivable opportunity. Lucifer wasn’t the first to demand equality, he was the first to demand social classes.