Thanks for raising closed hardware too, and I presume you are talking about the Intel ME (backdoor spyware [1] that Intel puts into all their chips via their closed source proprietary firmware). It's a complete blackbox, other CPU that no one knows entirely what it does, but has full access to your main CPU/memory/computer, and allows it to be remotely controlled by anyone with Intels signing keys.
We need to open this too, or at least be transparent, and your points on closed firmware/hardware is really important.