Okay, fine.
But you're wrong. First of all, cheap is a john, even if it is not applied to an element of the game. Calling anything cheap is a worthless excuse for you losing. So really, "There are no CHEAP characters, and there are also no CHEAP players, because CHEAP is a JOHN."
Secondly, this "cheapness" you refer to (campy playstyles, etc.) is what will win you Brawls with many characters. With all of the ridiculous projectiles and enhanced defensive capabilities and options, coupled with the decreased ability to approach and combo, these campy playstyles are usually the best way to win, especially with characters like ROB with a great recovery and great projectiles.
As far as spamming, if it's working, I see no reason not to. If a move is good, use it. If your opponent gets caught in it every time, all the better. Spamming shouldn't work, and if anyone is stupid enough to fall prey to someone using the same move over and over, they should try to get better (note that I'm referring to moves and not projectiles; I count projectile spam as camping.) I haven't seen stale move negation having a big impact on anything but tourney play, so who cares? If it works, spam away.
Yeah sure, some players have so-called "cheap" playstyles. Those are the smart people. People are calling camping "cheap" because they're losing to it.