I have flown into and out of JFK quite a bit and generally the controllers do a good job of moving a lot of aircraft without delays. This controller was probably limited with the options available to him due airspace restrictions. However the controller says "you're gonna turn right to a heading of 080" which is confusing because he should either say "turn right now heading 080" or I will be turning you shortly to 080". Not surprisingly the Shamrock queries whether he has to turn to which the controller replies "You have to follow to Greki that is right underneath you" . That response is of no help at all so it is no surprise that the Shamrock pilot yet again has to query the instruction and the controller then gives an intelligible reply.
I have no doubt the controller could have been clearer but I have sympathy for both sides as the controller might have just been trying to fit him in with subsequent departures and the controller's instructions may not have been as penal as they came across as. To me the controller is stressed due to the pressure of his job and not directly angry with the pilot.