I haven't got the sound on the episode so not fully got my head around it. But I can see it is heavy on population, so I expect it will work like a church where you have to carefully place them (probably scattered around the edge of your clusters), so as to overlap the max radius. You will then need to retro-demolish the Watchtower villages so as to get the points level down to your standard build. (Basically what we all do on Church worlds anyway.)
This could potentially be a major game changer as it would negate a large part of the reason for fakes, and could lead to people dotting single watchtowers all around the world so as to give you Watchtower coverage everywhere.
Although I need to see it in practice of course, I might be missing a major point.
