I'm afraid there are plenty of women who criticise others for not breast feeding, including you, Hetty, if you read back what you've written.
I bottle fed both my babies for various reasons and I still remember the smug, sanctimonious, preachy types who kept going on about breast being best. In the end, I stopped going to any post-natal sessions and refused point blank to see the health visitor (although I did see my GP for baby checks).
I had an emergency section after hoping for a natural birth and was stuck in hospital next to a woman with a very loud voice, who announced at every opportunity how she's given birth with no painkillers at all. Not only that, but she told everybody how she disapproved of bottle feeding. I met plenty of others like her.
I was quite ill after giving birth and breast feeding just wasn't going to happen for me. Nevertheless, both my children grew up to be healthy adults, who have hardly ever needed any medical treatment.
Unfortunately, I suffered from depression for years. Part of that was because I felt a failure for not being able to give birth naturally and not doing my duty by breastfeeding.
So, Hetty, please don't accuse people of being "oversensitive" and suggesting that "they're well aware what's best". The best thing for my babies was that they were fed, kept warm and given lots of love.