Giving ~precise and practical example can be suprisingly hard when you are working with some very different kind of thinking for a long time. At the end idea should be used in real world of course but it can take a lot of time to recreate lot of solutions which are resolved in mainstream but "reopened" in your world.

I think this article is quite clearly just reprsenting idea for people working with functional side and maybe thinking something similiar already. So if you "cannot get it" and author cannot give ~easy answer don't judge yourself or the idea/author too much but accept that idea can be still very early phase and work-in-progress.