By southern standards op is right that said group got off lightly but I think his choice of language was sub optimal for what he MAY HAVE meant to say.
I am going to hazard a guess what he may have meant was given the number of ignorant selfish tossers on the road you might have expected more than one long honk and punishment pass in those circumstances.
Rather than “I wish I had been in my bull bar equipped Australian road train so I could personally obliterate all of them”, which seems to be how some have read it t, sort of understandably.
I have been on the receiving end of other drivers abuse for waiting before. After 3 miles of following people weaving all over the road unfortunately one consequence is that someone then tries to do the vehicles that are waiting And the cyclists usually somewhere idiotic.
When I am on the bike I tend to be a bit more flexible than some, if I can stop for 30 seconds and release a queue of traffic so it’s not munching my rear tyre and they can crack on with their journies without being too annoyed then that’s a win win, chances are they’ve been held up by me for longer.