It sounds more like a turf battle to me. Non-nurse midwives can still practice if the bill passes, they just wouldn't be able to do certain home births. I'm surprised that a midwife would want to handle a VBAC, breech, or multiple birth as a home birth. Those aren't low-risk situations.
Honestly, I've never been a fan of non-nurse midwives. CNMs have a Masters, national certification, and at least 700 hours of clinical experience. With non-nurse midwives, you really don't know what kind of training they've had, or how much. A movement has started in Massachusetts to regulate non-nurse midwives, partly because of an IUFD caused by malpractice
by a non-nurse midwife. If she'd been an OB, she would've gone before the Board of Registration in Medicine. If she'd been a CNM, she would've gone before the Board of Registration in Nursing. But since non-nurse midwives aren't regulated, no one could sanction the midwife in question. I believe she is still practicing.