For the sake of argument, how is this different from self funding? Ramen profitable isn't profitable, and not taking seed is just preventing you from paying yourself.
I don't see it as a "2013 trend", it is something that only depends if the founder have a cash reserve or not. I don't think there were many founders seeking seed capital in the past out of absolute need. Not in the past, not now. Maybe these days we have more people saving money with the clear purpose of self-fund for a year or two. Maybe is anedoctal.