I don't think it's ridiculous statement considering their profits are rather fragile as that's before regulation and the size of the last years earnings equals about half the current valuation by NASDAQ's median P/E.
Day one investors transfered virtually all of their value to company insiders.
> We have experienced net losses in each year since our inception. In the years ended December 31, 2014, 2015 and 2016, we incurred net losses of $(30.8) million, $(47.0) million and $(54.9) million, respectively.
Blue Apron and AirBnB are not comparable.