A lot has been written on the effects of social media/Big Tech on politics and democracy, but most of these are from a U.S. perspective. This book attempts to fill a gap by analyzing effects on Indian users.
Sinha starts from the vantage point of John Dewey in the famous Lippmann-Dewey debates. In that, Dewey argues that although the public is irrational, its defining feature is that it's the sum of its parts. This is one of Sinha's central thesis; the public responds to misinformation that aligns with its biases and therefore any measure to counter misinformation must address this underlying mechanism. The book cites multiple incidents in India highlighting problems of 'misinformation menace' and 'limitations of fact-checking' at scale.
Sinha then turns to problems unique to India (as opposed to the West, that is). He outlines how political targeting that came into global view after the Cambridge-Analytica scandal also affected data-driven political consulting firms in India, how a lax handling of electoral data assists voter profiling and how the state uses its 'machinery to further party agenda'. Sinha blames the ongoing 'democratic backsliding' on the phenomenon of social media and online messaging platforms being primary sources of information. The book ends by noting that only surface-level regulations are insufficient and scrutiny of political advertising and funding are necessary.
I felt the book was a bit all over the place. Sinha's main points weren't as transparent. Some topics warranted more discussion for e.g. Competition commission, the apparent dichotomy of the relevance of social media/misinformation being a problem in a country with internet penetration less than 40 percent and hardly 40 million Indian Twitter users. Some of his skepticism on the effectiveness of political targeting seemed surprising but I haven't delved deep into it.
Overall, I still recommend this book. It's one of the few that takes an Indian perspective. It doesn't just throw incidents one after the other, but also delves into some first-principles reasoning.