Without quibbling with this basic directional correctness, the numbers in the article are bunk.
> "In the United Kingdom, about a million young people under 18 years old spend more than 50 hours a week caring for family members"
There are 14 million people under 18 in the UK [1]. If 1 million under-18s spend 50+ hours caring for family members, and only a few thousand tragic cases are under 9 (as the article claims) then the claim is that something like 1 in 3.5 children aged 9 to 18 spends 50+ hours caring for family members?
[1] https://data.unicef.org/how-many/how-many-children-under-18-...