If you look at how small a Starlink sat is, and how much of that space is taken up by power generation and storage, antennas, signal conditioning, RF electronics and more, I'm sure that whatever resources are running the computing in the entire starlink fleet orbiting the world can fit all together in one single row of servers in an existing datacenter.

And yes, a space-based computing node would not need quite as much of some of these things but they'll still need them in some way. It's not like you can just plug in a power and ethernet cable into them.

I doubt this will scale to a level that is actually useful. It's a nice experiment, just like Microsoft when they threw a datacenter container into the ocean. But not practical in the current conditions: https://news.microsoft.com/source/features/sustainability/pr...

Yes they say it is amazing and sustainable there in that blog post, yet somehow they've never bothered to do it again.

A datacenter is about data. Your network of space router is in no way something a reasonable person would consider a datacenter... Even less an inference datacenter.