I think you’re ignoring a huge factor in how radiative cooling actually works. I thought the initial question was fine if you hadn’t read the article but understand the downvotes due to doubling down. Think of it this way. Why do thermoses have a vacuum sealed chamber between two walls in order to insulate the contents of the bottle? Because a vacuum is a fucking terrible heat convector. Putting your data center into space in order to cool it is like putting a computer inside of a thermos to cool it. It makes zero fucking sense. There is nowhere for the heat to actually radiate to so it stays inside.

Pardon but this doesn't make sense to me. A 1 m^2 radiator in space can eliminate almost a kilowatt of heat.

>vacuum is a fucking terrible heat convector

Yes we're talking about radiating not convection