But the bulk of what we find is not for us. I keep a very small fraction of the things I find. The rest is sold to fund my habit.
I think Stitchy's point is that too often a thrifter will buy and wear something merely because it was cheap and available and provide such as his excuse for wearing it. This is also true of many who make purchases elsewhere too (the recent extensive debate regarding some bespoken wares, for example). The advice that he is trying to impart, if I can be so bold, is that this is a false economy. Wiser to buy better and fewer. Which, incidentally, is true whatever one's price range.
On that point, I concur completely. He's absolutely right about that.
I've definitely become far more picky about the stuff I find for myself these days. Honestly, I have enough stuff now that I'm starting to thin out my herd and donate some stuff I don't find myself wearing too often because it doesn't fit right.
It was a hard lesson to learn, but I agree with him that leaner wardrobes are much more utilitarian especially for starting off.