I’m with Jeff Wright. I find much about the way Quora is run pig-headed; but some topics are a lot better than no topics, and it’s much easier to tag topics if you’re given a starting point.
OTOH, I don’t have much confidence in how users are involved in any feedback loop, and some of the errors are quite obvious. More emphasis on topic confirmation for new users would be a good thing too; but that would run afoul of Quora’s longstanding policy of zero onboarding.