If we start to get a lot of comments here, pay attention. You'll likely see confirmation of recent trends in India. I suspect we're already seeing that, even with the few comments that have been posted so far.
Many of them migrated to West and continue to do the same caste things even in silicon valley. Google the Cisco caste discrimination incident.
In which alternate reality?
Getting into engineering schools requires coaching, which majority can't afford. Second, surviving there requires additional skills that state board educated Dalits and lower castes don't have.
You can Google for the number of Dalits and lower castes really getting admitted or finishing the course.
https://qz.com/india/2001747/iit-kharagpur-professor-abusing...