I don't think its really an interest in "Story Now" specifically, so much as a skirmish over understandings of it produced by that recent blog post, and emerging from other threads where people who like it argue with people who don't about whether or not it can do the thing the thread is discussing. You'll notice they always dissolve into arguments about terminology and whether detractors have an adequate understanding of the Story Now movement and whether their understanding arises from 'doing it wrong' and whether its proponents see any differences between their game play and the thing being discussed in the thread.
Like, it came up in the Skilled Play thread because someone brought up their opinion that they don't see a difference between juggling agendas in DW while the characters attempt to solve problems, and Skill-based play in RPGs that aren't a part of the Story Now tradition.
It came up in the bespoke genre RPG thread because DND players were expressing irritation with other people poo-pooing their use of the DND system for different things, and pushing them to adopt other games in a fairly narrow interpretation of the consequences of the truth that 'System Matters'
It came up in the players establishing facts about the world thread because Story Now games have a reputation for it and some posters wanted to police the discussion of the ramifications player establishment of facts could have on the game, according with the beliefs of that movement.
It came up in the GM's notes thread because the systems discourage the kind of GM prep found in other games (with extensive 'Story Before' lore write ups) so it was one of the strongly held positions on the idea of GM notes.
Generally speaking, its mostly come up lately in a context where its benefits are being evangelized and pushed as a new normative viewpoint in threads tangentially related to it, putting aside the thread about discussing it founded directly after the six cultures of play thread, and that thread itself, gradually taking it over by insisting the other posters simply don't understand them and that its actually an all-encompassing philosophy.
Honestly, I want more neo-trad threads, a lot of its 'problems' seem to result from underdevelopment so I think it would benefit more from the theory crafting than yet another lecture on how Story Now is actually a perfect fit for every gamer and game, and how anyone who thinks otherwise must be misguided.