Given the article is explicitly about things he's learned about the process of competing with Google through working for Microsoft, the fact that he works for M

Given the article is explicitly about things he's learned about the process of competing with Google through working for Microsoft, the fact that he works for Microsoft is precisely why he's credible. What would you prefer? Somebody with no relevant experience talking about the subject? I'm sorry, I really don't understand how actually knowing what he's talking about 'marginalises his credibility'.