Even if you had the same 60% error rate with humans the types of errors would be vastly different. Humans might make typos, or forget to include something, or even occasionally misremember some minor detail, but that's very different from BS AI just hallucinates out of nowhere. AI makes the kinds of mistakes no human ever would which means they can be extremely confusing and easy to catch or they can be something no human would even think to question or be looking out for because it makes no sense why AI would randomly (and confidently) say something so wrong.