Untrue. You can get people to complain about anything, that doesn't make it true.
Instead all we see about Caste discrimination is "it doesn't exist", "it's manufactured", "it's not a problem". It's frankly glaring.
They have no context of Indian caste system, and only go by some online articles that have their own agenda to make a bigger deal of the caste system in modern day, than it is.
Like which ones?