Add me to the list of SLF who would be more than happy to be delayed if it meant offloading an abusive, aggressive passenger.
I deplore this era of cheap flight for all and am a fierce advocate of compulsory IQ tests before anyone is allowed to buy an airline ticket.
If you do not know how to behave on a plane, you have no business being on one and ruining it for the rest of us, and certainly no business threatening people who are doing their best to be of service to you.