I 100% agree their actions must have raised almost every flag security wise, ignoring their appearance/nationality/religion
So if four suited, affluent looking businessmen had performed these identical late changes to their travel plans they would also have been offloaded?
I suspect not.
As SLF I have had full body scans, my trainers searched, etc etc, do I like it? not really, but I accept that security needs to be high and as a consequence, I will get stopped every so often.
And I am sure they were subject to exactly the same. But having passed all these strict security checks would you have appreciated being then offloaded because the cabin crew did not like the look of you?