Anon, you should see the absolute state of tier 69 colleges. I studied in such college and I once had an opportunity to apply for a lecturer position at such college. First thing that I get upon searching is that some student killed herself because of the authoritative professors in there. There were lot of people screaming in suffer at google reviews begging others to never join that college and that their whole life will be ruined.
I can definitely say that some tier 69 colleges are hell on earth for sure. They'll suck the soul and creative spirit out of you and only a shell of yourself will remain who will get easily taken advantage of by something like a WITCH company.
Look at the journey, not the destination. IITs are definitely good when it comes to infrastructure and quality of faculty and offer a sense of freedom.