Fire them. If you are specifically asking for a task to be done (add comments) and they are not doing it anyway it is the same as not doing some other task. If

Fire them. If you are specifically asking for a task to be done (add comments) and they are not doing it anyway it is the same as not doing some other task. If you don’t fire them even after talking and asking them to change their behavior then stop complaining and accept it as a fact of life.