Denmark, Norway, Sweden, Belgium, the Netherlands. All have far superior care systems to here. Denmark are better than most at publishing data and their data shows that children in care have outcomes on average on a par with those living with families, and superior to those living with families where there is identified trauma/ abuse (as they should do in any functioning system!).
When you have court appointed guardians - whose job it is to protect children - openly claiming as they did in Sara's case that a child should live with abusive family members because care would be even worse then a rational response would be to question why the care system is so abusive and fails children so badly. This isn't a necessity.
Despite early trauma, with appropriate therapy, support, stability and long-term homes with proper care-givers with whom a relationship can be established, children can thrive in a way they would never do in an abusive household. It is a choice not to fund this and pretend this benefits children in some way. It doesn't.
It's also simply not true that the UK removes more children than other countries.