Lisa, you still don't get it, do you?
Of course people can have different opinions.
But when people declare themselves to be professionals and announce stuff that is just incorrect, and refuse to be put right, then it doesn't matter how 'relevant' their advice is. If she is advising new parents, then she needs to be sure she is in touch with the correct info.
How can anyone disagree with this? It's got nothing to do with nannies and mothers and whether we need each other or not. If someone decides they need a nanny, though, they also need to have confidence the nanny will know what she is talking about.
Please don't tell me you disagree with that!