My opinion;
Longboat tried to make Victor and couldn’t quite make it happen so ended up in that annoying situation of having to move relatively slowly to the next exit. It’s a bit embarrassing when that happens because 90% of the time it is because you have misjudged your deceleration or landed longer than planned. It happens though and at some stage most pilots do it. The explanation about being heavy and full was a bit much, but not impolite.
The situation started moving away from normal/ professional when the controller said “ I don’t care about all that”. It changed the tone of the frequency for zero gain. Both aircraft remained professional on the radio despite the controller taking it yet further by bemoaning the Longboats communications to the aircraft who was busy dealing with a go-around.
Aviation can be tricky, planned exits aren’t always made. Introducing childish comments doesn’t help and could potentially hinder the smooth running of the frequency. At the end of the day it was no big deal, but the controller could have conducted themselves in a more professional manner.