I think the suggestion is that the EMR should flag dangerous conditions like this, and notify the doctor on duty to at least take a look at it.
So now you need an extra on-call doctor just to filter out the false positives, or the on-call doctor gets notification fatigue and ignores them.
Or in the best case you send a lot of people to ER in the middle of the night for no reason. Again thanks to liability concerns, but this time on the part of the primary care practice.
Or a PA or CRN. They are cheaper. As the last resort you can have an AI doing it :-)