Gotta admit, I'm still not completely grasping the hype around HTMX, but I thought one of the core ideas was that it decidedly should not feel like writing an SPA, but more like old-style PHP or ASP scripts again. (In the sense that the front end is driven by the back end instead of the other way around)
So wouldn't this give you sort of the worst of both worlds? The modeling overhead of SPAs + the tight coupling of HTMX?