To be fair, AMD also has that "integrated backdoor" for the sake of argument, called Platform Security Processor, sharing acronym with extremely popular game console just like Intel ME does with extremely often mentioned Input Method Editor(s).
It's x86, so if you count ME/PSP as a back door, then the answer is almost universally going to be yes. It would be like commenting on the new release of Ubuntu and asking if it was still using a Bourne-like shell by default.