I think it takes a lot of temerity and hubris to look at a 2B raise and assume it's all hype. A16Z has certainly had some misses, but one assumes there actually is some product they're showing behind closed doors that makes this round much more reasonable than it appears from the outside. If something makes no sense, seems totally crazy, and is being done by a crowd of extremely smart people, you can only assume one…
While these are not necessarily typical cases, they show that it's absolutely possible to have gigantic valuations raised from industry experts with nothing to show for it, if you're good enough at lying.