What was the announcement re the kids?
I disagree with the comments about him and his 5 bedroom house. Good on him for having that as a goal. Sadly not everyone is in a position to go out and get a mortgage straight away, and like someone mentioned have good credit or a huge deposit- whether that be a 3 bed or a 5 bed.
if staying in the flat means he can get that sorted then good luck to him, there’s absolutely nothing wrong with that.
I do however think he should be more careful with posting where they live and pics of the kids.