"Better than three years ago" is a different measure of success than "better than humans"
Different tasks have different error tolerances. When an MI tool can get within the acceptable margin of error for certain tasks, then there is a possibility for the MI to take jobs.
As long as accuracy is critical to a classifier, in many cases it's better to pay for human eyeballs to look at the criteria.
We're talking about a huge spectrum of applications here. Most of us probably don't care that much about the difference between human and MI error rates about classifying images used in broad-scale advertising on the internet.
We do (or perhaps should) care very deeply about human vs. MI error rate in terms of granting or not-granting things like parole.