Never had any problems with DXB controllers. They're probably more professional then anywhere, and still find a small gap to fill in a joke. However, due to the junk flying around down there, mainly steered by our eastblock friends, with their poor grasp of the english language, I can understand if controllers there get a bit ticked off, making smart comments.
Never heard anybody on the freq "stating low fuel"....and for sure never EK, maybe it's the sh*t in my ears gain, I've been meaning to get that out for a long time now...