I don't know.
I'd guess the Buddha teacher did what is the most that can be done in such places to dissolve the caste system.
I'd opt for a lowly monk in a seculded monestary someplace perhaps with a particular teacher of great teaching...so he may attain enlightenment to the fullest fashion one may as human.
I expect he has the potential
at least by a summary or cursory investigation.
That's my opinion.
Suspecting the entire world does change in a fashion when one comes close as one may, perhaps, in human fashion, but that is a personal view.
"This order considers that progress can be achieved more rapidly during a single month of self-transformation through terrifying conditions in rough terrain and in "the abode of harmful forces" than through meditating for a period of three years in towns and monasteries"....Takpo Tashi Namgyal.