I was born in the second southernmost district of Kerala, Quilon (now Kollam). I am now a U.S. citizen in the Bay Area. Growing up in Quilon, I attended an Anglo-Indian boy's school called Infant Jesus - in a small strip of land called Thangassery, people predominantly spoke English. I was taught British dialects emphasizing pronunciations that mimicked the world stage. I didn't really understand it until much later in life.
In my 20s, the contrast hit when I traveled across other parts of India.
Kerala has a mix of Western population that decided to stay back after the Indian Independence that brought with them Christianity, education, hospitals, and the Catholic culture. Kerala is also one of the few places in India where you can eat beef without inhibitions.
The writer hasn't emphasized this enough, but when oil struck the Middle East in the 1960s, the massive influx of blue and white-collar labor (who had the English language and engineering skills) that helped set up what's now Dubai, Abu Dhabi, Bahrain, Oman, and many other countries was built by Malayalees. My father-in-law was one of the earlier engineers at Aramco in Saudi. The Middle Eastern money has flown back to Kerala thanks to high bank interest rates (nearly 10%) and landlocked real estate that helped raise the state's GDP.