@darius I feel very strongly this way about law journal articles, and have for years. More people would read your long-ass article if it were a blog! But academics keep publishing in "real" outlets, either to get tenure and/or to be taken seriously. But, taken seriously by whom? They're writing mostly for each other, not for anyone else.

(I note your implicit distinction between non-peer-reviewed and not-yet-peer-reviewed. But also... most law journals aren't peer-reviewed at all!)