Don't think that's necessarily a really good metric in this day and age, as there are "good" kinds of unprofitability and "bad" kinds of unprofitability. Amazon was unprofitable for most of its existence until relatively recently. Most successful startups are unprofitable, and these days with the "winner take all" mentality of most VCs a company would be
penalized for being profitable too early.
I think a much better metric, especially for early stage companies, is their growth rate, their customer acquisition cost, and very importantly, their customer churn rate. Blue Apron's churn rate coupled with their high CAC has always been a giant flashing red flag.