That comment.
What you linked is not my comment.
Exploiting these things is only necessary in those kinds of ops,
Nonsense. Any botnet would benefit from exploiting it. The threat is not limited to targeted attack.
Your machine would already be tipped over,
Nonsense. Intel admits that the IME enables remote access.
But ok you want a computer that has well documented vulnerabilities
Of course.
that will not be patched
First of all, bullshit to not being patched. 15h chips are still supported in the free world. See 15h.org. Patching is also not the only remedy. There are many different ways to control for a vuln and sometimes a vuln requires no control at all, depending on the use case and threat model.