You don't have to. Libreboot is available for some Thinkpads. I use an X200s. There are businesses that offer Libreboot flashing services or sell refurbished Laptops with Libreboot installed.
That's not the case. ME code is large and not bundled inside CPU. On old systems it's was possible to not provide ME firmware while keep CPU operational.
On modern systems it's will just poweroff every 30 minutes if ME firmware not present and this is why libreboot won't support any newer hardware.
And, even worse, why is there not yet a startup competing with Intel in the desktop market?
Are fabs the issues? Knowledge? Engineers? I mean, Uber got many billions in funding, with Ubers funding one could build easily a fab for 14nm process and hire all of AMD.
Yeah, between this and the power saving bugs in the last few generations of i-core processors I'm really feeling deflated about the last 2 laptops I bought. I used an Acer c710 w/coreboot+seabios and it worked so well. Good battery life, and mostly open bios. IIRC, me blobs were compiled in to coreboot but at least it worked without disabling hardware features.