What I said was absolutely correct. Tummy sleeping (or any position) does not CAUSE sudden infant death.
They are not sure what the risks are, so it is a slim possibility that back sleeping MAY reduce risks. Since infant mortality hasn't decreased since the BTS campaign, however, there are many schools of thought that the campaign has just spurred autopsies that have re-classified deaths to tracheal problems, heart defects, etc., but that's another story.
Tummy sleeping does NOT "cause" SIDS. That is my point. And it still stands that it is ridiculously rare and shouldn't be a worry anyways.
But there are preventions one should take to decrease the risks, I listed some of them.
And, even though it's rare, I think we shouldn't forget it.
And, the amount of babies dying of SIDS decreased a lot when they introduced back-sleeping for babies instead of tummy-sleeping.