Technically, when you press “W” on your keyboard, a bunch of things automatically happen and could be considered automation. You aren’t telling your computer every step of code to eventually end in your screen showing you a “W”. And in reality, you’re just cloning that key to your screen. A program takes care of it; only an old fashioned typewriter would completely bypass this.
The process of that Key Press reaching the Client is software… for everything. The issue is what happens once it reaches the Client. If “W” doesn’t do only “W” action, but does X, Y and Z as well, then you’re automating.
One press, one action per Client is the only definition Blizzard has for defining automation. The automatically you’re stuck on (the key clone) is considered a single event by Blizzard.
General is a better place to discuss the semantics of your opinion versus Blizzard’s on Multi-boxing. Customer Support has responded with Blizzard’s stance; feedback for Multi-boxing won’t be seen here.