That in the UN thread currently is a mess I have to say, but I have some suspicion why you react this way now. Our system of voting and which position singular players hold is vastly different to yours, so I guess Red Dot felt we didn't represent us seriously (both, in the Cafe and now) when sending people that aren't highest rank?
That would explain this ridiculous lieutenant colonel invention, or the third secretary nonsense, because in your system every player is already ambassador or some sort of leader of military or design or whatever, and you would only speak in their name normally - an important name.
The system we have however works much different. We randomly drew 5 officers from the official list each, who then grant us voting influence in different sectors, depending on what position these officers hold. (positions have been given meritocratically to talented officers so far, and more responsibility means more vote)
Though we are not technically restricted to not invent other characters, these 5 likely form most of the RP of each player. If we want to say something, we use one of those that seems most suited, but of course far from everyone can be Admiral-Super-Chef, so you see us presenting Captain of 2nd Rank (=Commander), Colonels instead of Generals (which is still Captain equivalent, mind), or non-leader politicians (still interim-ambassador though).
They are of course especially low ranked now in the beginning, because the original seed only gave each nation a single admiral for example, and the rest captains. So this demographic will likely rise in time, but it is good this way, because that gives opportunity for growth stories for your officers.
Since you all invented your own characters, who all get some major administrative fleet admiral, or science director uber-position I assume, I get that it may strike you as odd to be dealing with normal personnel, but really, who cares, because it is still realistic (probably even more - the king doesn't build every house personally), and there is no difference as long as these people have their mandate for negotiation.
So now you know that this is no lofty or snooty acting on our side. Both these meetings were meant completely serious, and I hope that it was just this misunderstanding that you were reluctant to bring up the same on both these incidents.
It is just agonizing to see having well prepared meetings completely ridiculed and disregarded. We might as well drop RP altogether if that continues to go this way every time.