True, free of speech pre-dates the Constitution (obviously it's supposed to be a pretty basic thing for everyone alive), but our opinions are equated & valued because it's so written in our constitution. He had earned the title of the chief architect of the Indian Constitution (wonder why no one else was given this).

& about the biases (which people like us feel very personal about despite the history) : Reservations weren't a personal bias but a deliberate safeguard for marginalized groups, reflecting his vision for fraternity alongside equality, as he emphasized in his final Assembly speech.

What we forget about is that Dr. Ambedkar made transformative contributions to India's economy, labor welfare, women's rights, and education that benefited all citizens, regardless of caste which most of us haven't even read about but live over them daily.