You want my reasoning on why its a 'crap' decision?
I don't see how the FIA can punish McLaren when deliberate spying and espionage is part and parcel of F1, and has been for many years. The decision to strip McLaren of its constructors points and impose a massive great fine is also extremely excessive when you consider what happened between Ferrari and Toyota a couple of years ago. Back then it was a couple of ex Ferrari employees who took the designs to Toyota, who used them when designing their 2003 car. Of course, they were later sacked, along with a few high ranking Toyota personnel (Gustav Brunner, Ove Andersson). Toyota itself escaped punishment. Why should McLaren then suffer such a penalty when the circumstances are basically the same? In fact, McLaren never even used the dossier to implement designs on their car. Besides, why fine the team anyway? Where does that money go?
Why aren't Ferrari being punished for this as well? If you're going to punish McLaren for the actions of one or two employees, then punish Ferrari, as it was their actions which led to the dossier ending up at McLaren (or more specifically, at Coughlan's home). By being unable to prevent the theft of the dossier, Ferrari are guilty as well and deserve to be punished. My Toyota example proves its not the first time it has happened, so Ferrari really need to get their house in order, if nothing else. Also, how did the (Italian) media get hold of such confidential stories through-out the year anyway? Fed by Ferrari no doubt.