Please recall that the vast majority of Facebook users are not from the US. I'm not sure the scandal has been that much publicized or that their global image has changed much to be honest.
My dad, who is 50+ years old, knew about Cambridge Analytica few months from now because of a documentary related to Donald Trump's win; he deleted his Facebook then and there.
However, I'm not sure that a majority of the people in India really care about the shady privacy permissions Facebook has slyly made them accept.
49% of Facebook's 2017 worldwide revenues came from the U.S. and Canada [1].
[1] https://www.sec.gov/Archives/edgar/data/1326801/000132680118... page 37
All users are just product to Facebook.
It could well be that Facebook's American corporate customers are more interested in worldwide product than domestic product.