Post your proof or admit you really don't know anything of the kind that is factual. . . because there is no evidence for what you are claiming. Zip, nada, zero.
This issue is occurring on iPhone 5, 6, 6s. There are thousands and thousands of posts on it. Many of the issues are fixed by doing a factory Reset, or even a battery calibration, almost all fixes are “software or bits” related. In some cases ya, the battery is bad, but not even close to the majority. I did my homework on this issue, Apple has a serious issue they are unable to track down. Just do a search on “iPhone 6 shutting down randomly” in google, read the official blogs on the steps necessary to “fix” it and the thousands of replies from bewildered Apple fans. Sorry Apple Fan boy, I do know what I am talking about.