Upvoted, I think that's a very fair point. From Calvin and Hobbes to Montaigne: "There is no man so good that if he placed all his actions and thoughts under the scrutiny of the laws, he would not deserve hanging ten times in his life".
He exaggerates for effect both in the extent of the crimes and the extent of the punishment but, as a complement to the idea that an employer (if you will, a potentially "unfair judge") can extend their checks from criminal activity to all online activity and in so doing legitimately dismiss an employee, it seems an appropriate "polite" reply to my comment's parent.