Did we watch the same video? My takeaway from Manley is that it is something that can pencil out as a physics problem with a very carefully selected orbit

But as an engineering problem it's quite another thing. For example he talks about how far you have to pump the ammonia, and then you either need a very large amount of ammonia, or you have to pump a smaller amount of ammonia very fast through kilometers of plumbing.

Of course there are highly theoretical ideas like making an atmosphere of coolant around the satellite or something but he left that stuff on the sci fi category.