If I'd got the letter she had, and had received the kind of negative press from other mums as she has, I'd be pretty furious about it too, and think I'd be 'bleating' as well.
I see it as being like a shop. Sometimes, you know exactly what you want - all you need is a sales assistant to show you where it is. Other times, you just want to browse, to get on with it your own way, or even to leave, but there's some in-your-face, smarmy "customer care staff worker" who's grabbing you and basically telling you your whole family will die if you don't buy this amazing product, and its monthly insurance cost, and all the matching gadgets. I literally avoid small shops because I know someone will ask me "How can I help you?" when I just want to be left alone to browse at my own pace.
Breastfeeding is just like that. In my 2 week hospital stay, I think I met more "breastfeeding co-ordinators" than doctors, nurses, midwifes and cleaners combined. When I got home from the hospital, I got a phone call EVERY DAY from "Mum2Mum", asking how I was doing with my breastfeeding. They came to my house with a pump I didn't want, and then asked me to pay for it.
If I want your help, I'll ask for it.
And when I decided I wanted to stop BFing, they sent two midwifes to my house to change my mind. But it wasn't, "listen, we want to explain why it's good to breastfeed" it was "LISTEN, we want to explain why you are being extremely selfish and irresponsible and putting your DD at risk, and ruining the sacred bond and blablabla". And the way they looked at me, like I was scum 
Good for Denise, speaking out about the way people treated her for stopping. Just like her, I was so proud of myself for breastfeeding and told everybody. I didn't, at that point, know how much trouble it was going to cause for me and DD that I'd have to stop at 2 months and then explain to all the people who had no business in the matter what "went wrong".