Oh dear the same old vindictive BASSA Reps survive!
It is an unfortunate fact that a sizable minority of Lhr based cabin crew,LH and Eurofleet, perpetuate this anti team/flight crew attitude. Until natural wastage etc. removes them from the cabin crew comunity nothing much will change, also, often reflected in their attitude to their passenger customers.
Refreshingly Gatwick and Mixed fleet crew are almost unfailingly courteous and friendly to spend your day working and socialising.