A lot of research went into solving SIDS and once the recommendations changed to always make infants sleep on their backs, SIDS plummeted.
Except that there is exactly zero evidence to support this.
Those sort of injuries would be as readily apparent as if you'd run the child over with a lorry, and they are absent.
2) Does a detailed CSI-level investigation take place when an infant dies of an apparent SIDS death? I'm sure the parents are delicately asked about what happened for somebody to fill out the paperwork, but if there's no obvious bruising or broken bones or anything, how intense is an actual investigation?
2) Occam’s razor. I will give you that sleeping with newborns in bed and accidentally smothering them happens all too often, but anything more malicious can in my opinion be safely discarded, because parent’s killing their child require way more presupposition and proof would be on your side.
It's obvious instantly.
This is how internet rumors begin.
I wont repeat what others stated, just point out that reactions to your post reflect well just how ridiculous things you wrote.