I agree on the lack of professionalism on the part of the crews. It is sad to see screaming, shouting, harping and every other negative connotation that can be given to the nature of conversations on RT.
I personally was part of the brouhaha that evening and waited for 55 mins between DC and PB encountering along the way screaming pax who had to be controlled and a rwy with... to put it mildly.... dubious characteristics.
When things will improve is anybody's guess but as of now it doesn't look pretty at all.