I'm only SLF / PPL, so not qualified to comment on the procedures, and who was right or wrong.
But what jumps out is the unprofessionalism of the other pilots who were so keen to get into a fight that wasn't theirs...what did they add other than satisfying their own egotistical desire to have a dig?
Almost wary of saying this, but was there something in this about having a go at an Englishman in Dublin?