Yes, I wondered if something was garbled there. He almost seems to be saying: If you don't have an audience and don't want to build one, write for us (i.e., if you're a rank beginning just writing for fun or because it's your "passion," stick around). And, as you say, it seems to contradict other things he says.
I agree with everything you say about the proliferation of junk food here that overwhelms and makes it hard to find what you want to read. With every post I debate whether to add the referral link because there's so little here to interest those who might join.