I saw this article a while back and was reminded of it recently in a conversation with a colleague about SW.
There are certainly plenty of faults with SW/misunderstandings of what the plan is, and a common criticism is that fruit is (usually) free unless blended/pureed, in which case it has syns. People often faux-naively ask "HoW cOmE fruit is MaGicAlLy woRsE when in a SmoOtHiE?"
SW explains this, but so does this article about baby food:
"Fruit pouches marketed as having "no added sugar" containing about four teaspoons of so-called "free sugars" (created when fruit is blended) - something that experts say is "intentionally misleading"
The NHS says an infant should have as little sugar as possible, and that a one-year-old child should have no more than 10g of free sugars a day.
Free sugars occur when fruit is pureed, as is the case with the pouches. Eating pieces of fresh fruit is much better for children."
www.bbc.co.uk/news/articles/cp8jd3ydzd0o
Just thought this was interesting as it supports the rationale behind synning pureed fruit.