But it's hard to imagine what an "incorrect" interpretation of Hamlet even looks like, or what the impact of having an incorrect interpretation would be.

Well put. You've concisely stated a heuristic that is very powerful but rarely used where it needs to be.

Be warned: it's actually a source of sadness for me whenever I start asking the question, "if X performed Y badly, what would be the impact?" -- because the conclusion is often "not much, so why does the world create incentives that led to them trying to do Y 'well' in the first place?"