布小熊

I think it's unsafe to keep baby in the same bed as adult. Babies are tiny and any movement from an adult could harm them. cribs are built and meant to use by babies.
I tho it's common sense....
recent death of baby in Surry could be caused by the baby rolling and got caught in between the gap of a regular bed and the wall....

布小熊

I am actually not worry about SID. I mean it's really hard to prevent it. I am more concern that some parents are not trying minimized chance of accident. (as you said 不安全的睡眠安排)