> That's just an ignorant response.
It's an educated and sourced one, as opposed to your flippant comment.
> There are plenty of board-certified midwives
Not only are there plenty of midwives which are not that, how meaningful board accreditations are depends strongly on the board, CNMs are true professionals[0], CPMs are pointless layabouts.
> birthing centers
The comment I was replying to was about homebirth.
Birthing scenters are usually professionally staffed, attendant to hospitals, carrying necessary emergency materials and will immediately transfer to their linked hospital in case of complications. And good birth centers will plain refuse at-risk patients and direct them to hospitals.
> Importantly, a great deal of risk can be ascertained before labor
Which is already included in the statistics above.
[0] and even with CNMs homebirth mortality is significantly higher than hospital birth.