Haven't gone through each and every page, so please don't remind me of posts that are like this one.
IMO, the CH trainer is making it easy for us to get achievements that are shared with the multiplayer component of the game. So I am sure that Blizzard will regard CH as "Multiplayer Hackers".
So this is a situation where Blizzard will surely land itself in reduced sales when it comes to their future releases.
The main issue is Intellectual Property rights.
They sued mulitplayer hacks because the creators were making a profit off of them (something derived from StarCraft 2's software)
They sued MBCGame because they're using StarCraft: Brood War tournaments because they're making a profit with their product (and they want part of that money).
This is just my speculation (read: Not truth), but I think they're targetting people who make money from their products (and don't pay royalties to them).