I found formula a godsend. I had PND with DS1 and being the only one who could feed him and the resulting sleep deprivation made me seriously resentful. Switching to formula helped me get a bit of distance and made me more able to bond with him. I think it was the best choice for me.
I FFed DS2 as well as DS1 was only a toddler when he was born and needed a lot of attention, I didn't feel I could try to establish BF with so much on my plate as I am not one of those lucky mums who takes to it like a duck to water.
A midwife was visiting and I told her I wanted to switch to formula. She waited until DH left the room and asked if he was pressuring me to do so. I said no, he was happy either way. So she told me she would be REALLY DISAPPOINTED IN ME if I FF like she was my fucking mum or something. She could recognise it was wrong for my DH to pressure me into FF, but was happy to pressure me into BF.
So yeah, I totally get mums like that blogger feel the need to rant and complain about BFing evangelicals and justify their choices.