He's not saying "I would never pay for a text editor, that's ridiculous!", he's saying $70 is just a little steep for a text editor. What exactly is it offering that makes it worth $70 vs something more reasonable?
Panic's Coda is priced similarly, but it also offers a lot of web-dev targeted features that other editors either don't provide or only provide less user-friendly plugins for
When you strip out plugins made by someone who isn't getting a cut of that $70, what are the tangible features Sublime has over the glut of free editors out there?
Do you use Sublime for work? If so, you should pay for it. Any other excuse is just you, being cheap. $70 is nothing for it offers.