I call BS on this uninformed Police State Apologetics!
The U.S. Supreme Court makes it clear that if officers knock or bang on a door and announce their presence and then become aware of sounds indicating the likelihood that evidence is in the process of being destroyed, those officers may enter the home without a warrant to prevent the destruction of such evidence. What is not permissible, however, is for law enforcement officers to bang on a door and immediately demand entrance to a home and threaten to break down the door if such entrance is not granted. The U.S. Supreme Court stated unequivocally that if law enforcement officers behave in this manner, it will constitute an actual or threatened violation of Fourth Amendment rights and is therefore impermissible
Well then jump out there and sue the Governor of the State of Massachusetts! (Or any other official that declares exigent circumstances.) I doubt you’ll get anywhere.