Indian fake ratings are a big thing, but from my own experience collecting good ratings, I can attest that keeping fakes out if the system is a big effort, and it cannot be done manually. I implemented a complicated but fair statistical system to keep fake ratings out from my site. But I'm only doing the top 3 film festivals, not all the crap. The manual blacklist is still huge.

In the west the biggest offender is A24 btw.

And to be fair to the Indian movies: The top Indian movies are usually better than the best western movies. But we didn't have top Indian movies for almost over a decade now.