The thread seems to be a bunch of non-indian people (white dudes) talking about what they heard from “second hand” sources.
But whatever. Hopefully I won't have to start filing TPS reports on my caste.
I'm not saying discrimination doesn't happen. But there's literally dozens of factors that indians like to use to discriminate against each other (what language you speak - we don't all speak hindi, what state you're from, religion, gender, and a bunch others)
Half the time it's impossible to tell what caste someone is from. (Not the case for me - my last name gives it away - but again, I've never had someone discriminate against me based on my caste)