I was surprised to see as large a bounce as there was. And it has no doubt realigned the world view of a bunch of Snapchat employees[1].
To your last point I can't imagine they are going to talk earnings in a GAAP context unless they are generating lots of free cash flow as Google does.
[1] If you're an employee and reading this and thinking "I'm rich! Quick go buy a Lamborghini!" I caution you to wait until you've not only exercised the shares and paid tax on them, but you have sold the shares and that sale has 'settled' and you have the money in your brokerage account.