The problem is there are some crew who know some very uncommon words, but are too thick to realise that the security staff are just doing their job.
It is no different getting the tuna confiscated than getting your water bottle taken that you are prepared to drink in front of the security staff.
The issue is not about whether the item is known to be dangerous or not.
It is about the fact that it is in a container that is too large and has some liquid or gel contents in it.
That's the rules and most people get that idea.
Yes it is ridiculous, but they are sticking to the letter of the law and they can't be faulted for that.
I agree that security staff display very poor customer service skills, but that is not their job.
I think it's a bad reflection on crew in general that some of us resort to ridiculing the people who are doing the job they are paid to do by referring to their race, religion or perceived lack of intellectual ability.