If he's right about the emotional bond, which as greeny says seems obvious, then isn't the rest of it hugely variable and dependent on individual cases?
We had a choice of childminder or nursery - the best available childminder in our area looked after up to 5 charges, in her own home, which was nice yes but quite cramped. Plus it's not unheard of for people to change childminders or mix childminder with one or two grandparents doing a day here and there (in fact it's common) - so in what way does using a childminder ensure continuity of primary carer?
We chose our nursery because there is a ratio of 1 carer to 3 children, special dedicated rooms and toys for each age group, keyworkers who give DS a strong, loving and continuous emotional bond, a loving and happy atmosphere and on top of that, the fact that there are multiple staff means there is always someone available to cuddle or comfort DS if he needs it - whereas a childminder working alone must needs sometimes neglect children if one of them is in particular need.
It is massively oversimplistic to say just because a childminder is one person in their own home, that means there's necessarily more love or a better bond or better care.
Also agree that just because someone finds that one-to-one parental care is best for children, that doesn't mean they're somehow incapable of being misogynist.