I wonder if the cops didn't go to tell this guy "hey please be quieter" then he made a threat or something, and the cops maybe thought "we know the charges will get dropped but the best way to get this guy out of here and de escalate the situation is just book him so we don't have a bigger problem later." I don't have any formal police training but if this is the situation, then all the extending circumstances really don't matter. The discussion, however, has been fascinating and honestly pretty civil, which is cool.