is it true that it is useless to become a neurosurgeon in india, because only the ones who have rich parents or whose parents are already doctors will get good placement
This are the cliches which you are talking about. In India, the need of Neurosurgeon are increasing day by day. So there are need of well skilled surgeons in the field. So its not useless, if you acquire good skills and if you really become a knowledgeable neurosurgeon, then no matter what you will get a good placement or positions. So if you are passionate about Neurosciences just go for it and there's a wonderful career waiting for you.
To know more about Neurosurgeon jobs available just to have some idea about the field realities, visit any job platforms or just talk to some seniors, you will get the real scenario.
I hope this answer helps. All the very best for your future endeavors!