No, being a company that is built upon and successful due to its engineering culture does. Engineers are notoriously the most anti-social and lacking in etiquette of almost all professionals. Anti-social behavior is what drives most of us into engineering in the first place.
Google's hiring practices are simply a reflection of the type of people that they have to hire in order to be successful as the organization that they are: By engineers, for engineers, of engineers.
There are plenty of other (GREAT) companies out there to work for if you don't like the way Google does business or hires for that matter. The only reason people are whining is that they know exactly how AMAZING it is if you are lucky enough to work at Google (great pay, benefits, food, massages, etc, etc, etc)... and they are embittered by the fact that Google said they weren't good enough.
Rejection is always painful... but its best to take your dignity with you and move on when it doesn't go your way.
I think if you read the comments here and elsewhere closely, it's not that people are complaining Google said no -- it's that people are complaining that Google said nothing.
Google folks I happened to work with, do exhibit "noticeably higher than average" standards of social behavior. This is in addition to being world-class engineers.
OTOH, there is different spectrum of people in every big company - so maybe there are beasts sitting in the caves somewhere that bite everyone passing by too close :-).
You're right in one thing - one should not put the emotions into the process. A little research of past experiences reveals makes this very obvious.
Treat the whole process like a light cocktail-party flirt, and there's no disappointment afterwards. It's a free tour to the $interview_destination_of_choice, after all :-)
Engineers are notoriously the most anti-social and lacking in etiquette of almost all professionals. Anti-social behavior is what drives most of us into engineering in the first place.
Engineers also prefer data to hokey stereotypes and sweeping generalities. Got some?
