I think you've gone off on one now Brig. Are you referring to UK-EU negotiations or generalising? I'm not sure either side has made a fuss or commented about the location of the negotiations.It could also be seen as "I'm bricking it really, so I've got to make a big song-and-dance-about-it, to hide my insecurities".
But one thing is for sure, those with the most to lose, in ANY negotiations, will likely be the most subservient.