Yes, I think the point of saying "nothing clever going on" is to indicate that everyone can and should be doing this. It doesn't take some kind of Steve Wozniak to accomplish.

It’s good, it’s not particularly clever but as another comment says, that doesn’t really matter. Everyone should be doing this. It doesn’t have to be json payloads. We do the same with lazy loaded react components which are served directly from our cdn as needed. Probably not quite as efficient given react overhead but the effect is similar.