During Mao's rule was when China pulled far ahead of India in technology, gender inequality, infant mortality, average lifespan, population, literacy, average calorie intake, etc etc. The reform simply made the gap even greater, except in average lifespan, because we foolishly threw away our communist healthcare system.
There are 50,000 protests in China every year about these issues. How many protests in India? Is it because if Dalits and tribals protest, they will be killed by Brahmins and military police?
How would communism make the caste system, gender inequality, infant mortality, lifespan, literacy more severe? How can India's problems get more severe? India is already at sub-Saharan Africa levels in many areas.
Many Russians strongly support the return of the USSR. North Korea is not communist; they removed all references in their constitution to Marxism-Leninism when Kim Il Sung died. Their ideology is songun and juche, which means "Military First" and "Self Reliance", which are typical military dictatorship ideologies, not socialism.