The kind who might look at that kind of situation and think to themselves "Oh, goodie! Now I don't have to spend the next however many hours waiting on this cow to push. Someone bring me a scalpel, stat!"
In some cases, the woman might not necessarily mind such a decision. In a lot of other cases, however, they might mind it a great deal; especially if they wind up having to suffer through the long term complications of an unnecessary and potentially risky surgical operation that they never wanted, or consented to, in the first place.
There is a case to be made for having someone around to advocate for the mother in the delivery room. That's all I'm saying.
Frankly, it doesn't even have to be the father if he isn't qualified to judge such situations. There are specially trained midwives and birth coaches that can be hired to give "second opinions" in the delivery room these days.