I am aware that police officers are by definition an authority. However if they really properly can judge the effect of flashing lights on reaction time is another matter. I doubt this.
Actually what will happen is that your flashing lights will draw the attention of drivers in other lanes significantly more. Thus increasing the risk that they will not notice the lights of drivers ahead of them because you are drawing their attention. This is one of the side effects of "peripheral vision". I doubt that his police officer actually is aware of things like this.
If flashing lights like this would have any reasonable benefit I am pretty much sure they would be already required by law.