The term "hack" is used by Blizzard to describe any 3rd party program that changes the game at all. It doesn't mean what you think it means. Just have a look at one :

http://war-lords.net/starcraft-bw-hacks ... n-v4-0-6f/

I don't really know much about Starcraft or whatever. But these types of hacks look less serious that the ones we have in CS:S. In SC, it just looks like a bunch of scripts that makes your life easier by making you not have to do the monotonous grind of playing an RTS made by Blizzard (constantly clicking the same button over and over). I can only imagine that the grind in the game is worse than WoWs level grind.

Also you kinda answered your own question. It's a different game. If we had CS:S hacks hosted on here, then we'd be hypocrites.