At the very least, actual humans have an incentive not to BS you too much, because otherwise they might be held accountable. This might also be the reason why call center support workers sound less than helpful sometimes - they are unable to help you (for various technical or corporate reasons) and feel uneasy about this. A bot is probably going to tell you whatever you want to hear while sounding super polite all the time. If all of it turns out to be wrong… well, then this is your problem to deal with.