It is "integrated" in the way that the processor is an APU that has specific memory bus requirements. That's all. It is not an integrated software-hardware system that is finetuned, and that board is not any better than a a generic motherboard would be for a regular processor.
My point is that this system is not integrated in the way apple fans usually define the word. I'd claim it is not integrated at all. It is a regular PC (but with soldered ram), which is exactly like framework announced it.
There should be no need to sprinkle some apple marketing bs on that to make it attractive.