The cops came because the restaurant owner called them. The owner had the right to ask them to move to another table, and the guests had the right to refuse. The owner did not have the right to call the cops over this.
The cops should have had enough sense to dismiss the whole affair.
People in the article took surprise that 4 officers responded when they can’t even manage one for their own police calls.
And the officers eventually DID do the right thing by not charging the man (or even arresting him).
The couple should be comped a meal for the inconvenience if they are expected to ever return.