Its a rite of passage, and has always been - the ones who reject it probably fell for it, instead of having a laugh they whine on a bulletin board.
/lighten up francis
Typical response from somebody trying to make excuses for being a jerk. The "Make the objectors out to be losers." method of defense is most often false.
The fact is that most of us saying the juvenile prank is bad for the game never had it happen as most of were well aware of what Alt-F4 did years prior to Aces High existing. I expect that most of us never even received the Alt-F4 advice, at least I certainly never did.
Instead of justifying being a jerk, consider that by being a jerk you make the game a hostile environment to people who are often inexperienced with MMOs. At least some portion of the new players who are given and take that Alt-F4 advice never even bother to log back in. Those were potential customers that HTC will never have a chance with again because some jerk thought getting his rocks off by being a love muffin was more important that civility. Remember what your mother likely told you, "If you don't have anything nice to say, don't say anything at all."