I think it’s a bit backwards-looking to think in terms of “the format.” Before the record label era, there was always a huge mix of formats for music experiences.
During the record label era, that huge mix of formats has continued to exist and grow–it’s just gotten a bit obscured by the overbearing popularity of both the album and single formats.
So, the blog post is a format for music experience–cool! But, why imagine it should itself achieve any kind of overbearing popularity, as if it’s the new version of the record era’s format homogeneity?
I’d like to imagine this attraction to blog post-based music is another step away from the boring sameness of a couple popular music formats.