I play games to have fun and not be cheated. If those things don't happen i stop playing.
It is a risk you take by attending a tournament. has everyone of my tournament opponents been fun? no. have they all played within the parameters of the rules? no. We all make mistakes.
The higher the stakes the worse it gets.
This comes up in Warmachine all the time. "we were playing a fun, casually competitive game, until i forgot an ability and my opponent said too bad." These people will quantify it as "i want to win and its a competitive event". You allow them to do a redo because they seem friendly or you want their best game. It is my big issue with the gaming community. its all fun and games until it actually matters.
I really wish a company would put this line in their rules packets "if your opponent lets you correct mistakes (take backs) and you refuse the same treatment, they may throat punch you" I mean not really that extreme but if you want to see me personally lose it, let me allow you to redo a positioning or change a ships activation to another ship after revealing dials, and then when i say "hey i forgot to move this squadron, do you mind" and say "too bad..." the urge to table flip rises.
In a past store tournament, WGNF911 (running the tourney) gave a very clear directive to players. This is not a casual (relaxed) event and there really shouldn't be any take back-sees.
I thought this was great. It set the tone. Not that it wasn't fun (it was a blast!) but it put the mindset on everyone that we all had to play without making mistakes or it was on us.
I seem to recall in that tournament hearing so many times "oops I forgot" something and the player then saying "well that's on me."
While I don't think this kind of thing is a plague in Armada, it would be nice for all TOs to point out the level (relaxed, formal, premier, sith/jedi, etc.) before everybody goes out and plays.