The point is, its easy for clubs to find reasons to issue complaints about other teams
the swim away thing could well be harmless to most of us ( It doesn't bother me in the slightest, but I see it as Football banter ) but we know it is done to wind up / be provocative / incite our fans, thats the whole purpose of it, we know that ( and I am sure you do ), so when the club complain about " feel the gesture is highly provocative and threatens to escalate tensions between the two sets of fans. " they are right, thats the purpose of it, just as the examples I have given were to wind up / provocative / incite the Jacks, just as Southampton fans did the aeroplane, the list goes on, they are all done for the same purpose and chosen to have maximum effect