Rage quitting is bad form period most everyone will agree. Especially if they just menu quit before they are annhilited because that can cause a desync. This is a team game and your team mate suffers when you rage quit because now he has little to no chance of winning.
If you really want to quit atleast pull off and screw your team over atleast pull your units off the field and wait the 60 seconds for the message to pop up, Then quit.
+1 Pak for as long as you've played you should know that alt-f4's or menu quitting can cause desync's and the very fact that you thikn it's okay to just leave like this shows that you just dont care if the game desync's, which is why i avoid all games with you now cuz you have a total disregard for this community and its players.