Sure, but I don't see that as an argument against doing them. Even with an imperfect process I expect at least some people with a history of harassment would b

Sure, but I don't see that as an argument against doing them. Even with an imperfect process I expect at least some people with a history of harassment would be deterred from even applying. If the potential penalties for lying about your past or committing harassment are sufficiently significant (i.e. exclusion from future YC events) it would incentivize VC firms to police their own employees and partners, and send only their best behaved to founder events.