Agree. When I read the news article, the first thought that I popped to my mind is - the concerned pax could have spoken to the CSM on the flight and asked if there is a specific reason as to why a certain FA was wearing a certain nation's flag on their lapel OR ask the FA itself, without being agro or judgy, ask with a genuine interest to see if there is any reasoning/motive behind their gesture etc ...
A bit OT - I get the feeling that some people are a bit touchy these days? Granted different things affect different persons differently ... I mean, there could be something so naive/funny/casual might offend me, but it helps to talk about these things with the person(s) involved or their one-ups, if the person(s) are unapproachable ... I could be wrong and happy to be corrected, but reporting everything to media and making a *news* of it isn't really being neighbourly (?, is the right word, can't find a word to express what I'm trying to say)