He absolutely 10000% correct, it is not racism. Quora is 98% Indian (or similar region country people) asking fake questions to "market" their crappy service.
It is incredibly obvious if you ever visit once. (Probably will be your first visit because you didn't notice it.)
It is indeed not racism. I was an editor at Quora in its early days as a way to make some easy side money. I'd say something on the order of 90% of the unedited content in the queue originates in India, and it's terrible. Loads and loads of repetitive, already-answered questions (a seemingly never-ending flood) about IIT or body shops and worried queries about which engineering school is the best or the most competitive, all badly written and horribly spelled. And that's before you even get to the scammy stuff!
It is incredibly obvious if you ever visit once. (Probably will be your first visit because you didn't notice it.)