And it's not "just do some keto" in this case. You have to be very strict.
But there are many dosages of keto diet and you have to do it correctly.
Epilepsy keto is hard for real and takes commitment. You will never eat modern food again in your life. But better than life-long-suffering just to eat cake.
This feels like a “the truth hurts” kind of thing. Or a “personal responsibility isn’t my problem!” thing.
Maybe that’s the whole point though, anything that requires personal responsibility and accountability is rebuked.
So yes, at certain point a person is responsible for themselves, but on the other hand, if you have a goal of reducing obesity, you're not going to get anywhere by just saying 'well, everyone who's obese is responsible, and I am going to do nothing about it but remind them of it'.