Majority of Indians IT professionals or majority who has attended college in India are upper caste folks, the main supporters of current ruling party. So the trend is not surprising.
Many of them migrated to West and continue to do the same caste things even in silicon valley. Google the Cisco caste discrimination incident.
I doubt it. On an average around 70% of seats are reserved (affirmative action) for lower caste students. The difference of admission cutoffs is like day and night. I wouldn't be surprise that people from upper caste don't feel particularly well, for being lawfully, indefinite discrimination.
https://en.wikipedia.org/wiki/Reservation_in_India
The Wikipedia link is correct, but you are only seeing one side.
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.
Many of them migrated to West and continue to do the same caste things even in silicon valley. Google the Cisco caste discrimination incident.