Probably just a way of summing up the changes that come with it. People more spread out, not everybody knows everybody anymore, you don't see the top execs walking around the office anymore.... not that Facebook isn't already partway there already. Silos and cliques develop, etc.

The whole feeling of working changes from feeling like part of the team to just being a job.

I don't think that the idea of a corporate campus is evil or bad, but I do think that the implementation of corporate campuses is often very bad. Most corporate campuses that I've visited rely on large squarish buildings, which means lots of interior office space with no windows. They also tend to be isolated from the surrounding area by huge parking lots, with limited walkability to nearby restaurants and shops.

It should be possible to build a corporate campus that doesn't suffer from these problems, but I'm unable to think of an example.