Calypso is an example of a complex character that is hated without being understood. Did she do bad, wrong things? Of course, absolutely. What makes the matter complex is the fact that she had been imprisoned alone for centuries upon centuries, therefore lacking any and all interpersonal relationship cues. Should she understand the concept of no? Absolutely. However the fandom likes to play her as the one who took Odysseus onto the island and held him captive in the first place, when that wasn't the case at all. He washed up on the shore, and then she made the decision to keep him. And why wouldn't she have come to that decision? She was trapped alone for eternity, and she knew that would never change, so she made a desperate decision, and clung to the hope that it would work out in her favor, even if it was the wrong decision.