They were clearly in it for the investor perks and not the product, spending away like that.

If you want an unsustainable joyride, then you too can work for a startup headed for chapter 11 (like 8 out of 10 startups).

Also, knowing people in general has never not been valuable. It's arguably the main thing holding most engineers back from success. Plenty of evidence backs this up: Type fewer keys, press more palms.