I got a digital artbookI’m pretty sure the ED art book was delivered.
Was it even part of the kickstarter? Dunno, most of the rewards there seem to have long been delivered. Don't know about the physical models
I backed SC same time, it's the only KS I've ever backed that has delivered no product, I also feel it was unclear on the definition of "P2W" (we found out over a half decade later that meant something very specific to Chris' understanding of the literal meaning) and "Alpha" (which does not, in fact mean getting the first public iteration which they offered later to subscription accounts etc.)