Why can't iOS Simulator launch/create a device?

Question

iOS

Moved xcode to an external SSD as per this stackoverflow article.
I also moved the ~/Library/Developer directory to the SSD and created a link to it.

After that, the emulator stopped running.
The Simulator application itself starts but does nothing. The device is not displayed.
Tried to create a new device through Xcode, swears, saysDevice creation failed (device == nil)