What are you talking about? The article explains why she left Google, the company she was working for, to do something else. It's pretty accurate as titles go.
Within the context of the article, it's pretty clear that it could have been _any_ company of size, and she would have had the same response. When you title something 'Why I left Google' but your actually point has nothing to do with Google (or any large well known brand) the most reasonable term is 'Link Bait'.
The point about Google in particular is that it regularly tops the lists of big companies to work at when it comes to people in our field: workplace perks, project choices, flexibility, quality of engineers, and probably more reasons that have been gone over ad nauseam. There is a lot of status associated with being a Googler, and she talks a bit about that.
I disagree. Not every company is Google -- both internally, as an employee, and externally, in people's minds. If your thought process goes, "I am a software engineer; I want to be the best software engineer I can be; Google does the best software engineering on the planet; QED," then it intensely matters that her story involved Google.