Not entirely. As you know, public companies fluctuate heavily on other factors than just financial news. Something like a summary judgment in New York or California that negatively impacts AirBnB's business could send it for a spiral. It is likely more responsible to stay private until they feel they have solid footing with the regulatory environment. Private investors are clearly willing to give them a huge valuation knowing these events will likely turn out to be positive, and as long as employees are able to get liquidity, might as well stay private for now.

They do seem to be spending aggressively on growth (and legal) so I suspect you are half right in that they are probably losing a lot of money.