Flow control is obviously not designed by the controllers, no sane controller would implement such an unwieldy system, I have a high respect for most of the controllers in the region they do a good job considering their hands are tied.
However there are one or two fairly inexperienced ones who get a bit too emotional from time to time, this is as about as appropriate as a lippy pilot on the other end. Keep emotion off the airwaves.
Oh and please change the ATIS please, please, please, distraction in the cockpit is one of the largest causal factors in incidents and accidents, making a process longer than needed is not clever.