No we don't. we know what we know now and will discover things we think are right were actually wrong.
Exactly.
We do know that some babies that die of SIDs are now being classified as suffocating on unsafe bedding conditions, making them no longer SIDs. That's true scientific data that sleeping on their back and avoiding suffocation is beneficial. Or that too many warm blankets in winter combined with the heater cause the baby to overheat and die.
SIDs just means they have no clue what caused the baby to die.
Which means, they can't scientifically conclude that sleeping in the same room helps unless they can produce a reason why. They're shooting in the dark, the same as they were 50 years ago when it was advised babies sleep on their stomachs and be left to cry so they weren't spoiled.
My baby forgot how to breath a few times too. But then she started back up again without us there to regulate it for her. I am skeptical they need us to regulate breathing, as they don't need us to tell them they're hungry, to go to the bathroom, or any other basic instinct controlled by the brain stem. Nor are they around parents every nap to regulate breathing, and they do fine. If they're not regulating breathing, it's a physical brain development issue and there's not much you can do to change that.
That said, if parents want babies in the room with them, more power to them. If they don't, I just don't think such a statistical anomaly is worth fretting about if you birthed a healthy baby.