I am not going to blame you are anyone else trying to make it, but I find it quite hypocritical that Indian publications glorify people who have pretty much left the country for good.
Has the West not done the same? Who was Mother Teresa? When she adopted India as her home, leaving her birthplace for good, to help the distressed, did the West not glorify her as a "savior" and elevate her status to a "Saint"? Heck even after her death, lots of Western publications still continue to praise her work (and rightfully so). Should we call the West hypocritical then?
Just because Sundar Pichai left India for good does not make him any less Indian. At the same time, he is also not a celebrity.
If you bother to look at other articles published by the same publications you referred to, you'll notice that they praise a lot of other, more powerful Indian entrepreneurs as well. Sundar Pichai is not even on the same plane as those of Tatas, Birlas, Kirloskars etc. These are the local celebrities (household names if you will). Not Sundar Pichai. Go ask any Indian about Tata and s/he will tell you everything they know. Then ask about Sundar Pichai. That is when you'll understand who is the real celebrity in India.