This. Funny seeing this topic as I just installed Windows 10 and the nightmare is fresh!
My only question: Why? 
What possible use do you have for Windows?It's as if it's designed to be a spyware lol.
Windows is spyware with an OS built on top, not the other way around.but can the input for the RJ-45 connector just be desoldered just in case?
Or just fill it with glue or epoxy or something similar.While I personally believe in the benefits of air-gapping, I don't think it's that much needed especially if you're careful enough with what you're doing.
You are wrong here. Everyone from bitcoin developers to massive centralized exchanges have had their hot wallets hacked. We hear about hot wallets being hacked literally every day. I'm yet to see a report of a single (properly) airgapped wallet being hacked.