She doesn't say it can't be automated; in fact she basically says the opposite, only that it hasn't been automated yet:

Q: Someone should develop software to find these things. Software is going to be much better than the human eye.

A: I agree, and several groups are working hard on that. I have shared a dataset of 400 papers with image problems and 800 matched controls in which I did not find any problems with several teams that are developing such software. I have not heard back from any of them, so I assume this is much harder than most people assume. But this is only a matter of time.