Is this an entitled thing with us brits? I've seen so many posts about people who either think this (or argue against people who think this). I also had a conversation with a health visitor recently. I 100% listened to her but even she said "you don't have to listen to me though, you can do what you want with your child". "No! I most definitely should not!"
Weaning at 14 weeks, putting your tiny baby in a forward facing car seat, putting them in their own room on their front at 5 days old and letting them cry it out until they're vomiting (I don't agree with CIO ever but even American doctors argue it's unsafe before 6 months old!) All of this isn't "it's your baby, you can do what you want."
If there is actual health and medical advice saying you do these things and you will DAMAGE your child in any way, it's not up to you to decide whether to do it or not! You are responsible for their welfare, you don't own them and have your fun picking and choosing when to care for them properly. There's a difference.
(Adoptive parents go through so much and yet if you can have sex and have a baby it's like you can do whatever you want to them! Awful).