You are correct Skuzzy, some people don't know what the correct etiquette is.
The problem is mainly with those that, once told, refuse to conform. This is where the abuses occur.
At times it is very busy in the TA. That is good and bad. This weekend I spent all my time there (outside tournament duel time). I saw many who were there for FFA (free fight arena), some that were experimenting with ground vehicles, some that wanted to try specific airplanes, and some raw beginners. I tried to be as helpful as possible, as did many others that were not trainers. But there were clearly some present that had no desire to be cooperative.
Case in point; a few of us went to the SEA for a tournament duel late last night. We weren't there long before a new guy pops in and asks where we are, he wants a fight. We told him we had a duel going, and he needed to go to the MA or TA if he wanted to fight someone. "But I wanna play with you!" he said. We again politely told him to leave us alone and go to the TA. After a bit of silence we get the "F*** YOU GUYS, I'M HERE ALL ALONE!" These are the guys I have a problem with, not the new guy that has a 1,000 questions, is impatient, doesn't "see" what I'm trying to show him. I don't mind a guy popping in and shooting me down unnannounced IF he stops afterward if I ask him to. Judging from the complaints I hear, it is the same for most.