According to their Crunchbase [0] (which could obviously be incomplete), there's no institutional investors listed in their initial or seed round. I mean it's one thing to waste other people's money on a dumb idea, but this seems masochistic.
[0] https://www.crunchbase.com/organization/1for-one#/entity
edit: Another befuddling thing besides the enormous headcount was the fact that the original whistleblower was brought in from Dallas and offered equity and a $135K salary and a signing bonus. That seems like a huge chunk of money for a marketing executive at a small tech startup. Again, ignoring the reality that he couldn't really afford her, what did the CEO imagine would be investors' reaction to such a pricey hire?