I have hope in Risc-V.
The sad thing is that ME isn't even developed by Intel, but a third party. They sublicense it to Intel. So even if Intel would be willing to distribute the source, they couln't.
TBH, I think there is a lot of focus on this ME technology and I see no reason that at some point someone is going to crack the model or the encryption and reveal exactly what it is doing and how to disable it.