That kind of the point. Yes, changing TIM can lower temps. But the chips work just fine as is, and are actually likely to live a bit longer since they will throttle before they damage themselves. Change TIM, and then the CPU can seem to run cool, but can then consume so much current you can kill it easily.
People seem to forget that the CPU cores are but a small part of today's modern CPUs and those other parts.. don't report temperatures. It's like you all think Intel, that makes billions, is either dumb, or purposefully releasing stuff of lower quality just to be a bunch of jerks...
BTW, I have 7700K, 7700, 7600K, 7350K. They are nice chips, if you aren't having unrealistic expectations for them.
Also, my chips appear to be retail as well, but they aren't really retail version. You cannot get retail version of CPU that isn't in retail...
I tell people when the question comes up, stay to 1.325V. Here is a user, pushing higher, and overheating? ROFL. NOT surprised.