Yeah that is just wrong, I would reject it as a requirements phase defect.

Consider the problem User Stories try to address - inexperienced people attempting to write Use-Cases that just enumerate functions and do not consider the business purpose behind the requirement.

Then consider the problem Use-Cases attempt to solve - inexperienced people attempting to write functional requirements by just enumerating functions and not considering the business purpose behind the requirements...

It is not that an actor cannot be a computer system, it's that the labeling does not link to a real world business purpose.