yes, i'd say there is both societal taboo (especially outright culling them rather than just throwing stones at them to chase them away) and legal restrictions: https://www.nytimes.com/2012/05/23/world/asia/fed-by-indians...

I would say that at least in north east india, monkeys didn't seem to be a huge problem. There are langurs everywhere, but they mostly stick to trees or the jungle, or sometimes the outskirts of towns. I think it's probably because they have plenty of places to eat there relative to the more urbanized parts of the country.