We had a wife swap show in Germany too and by god was it absurd... there's two that were super memorable for me personally - one where a goth and a super catholic wife swapped, and one where a kinda culty christian one with 6 kids swapped with a middle class family with 2 kids.
The second one was so sad because there was massive aggression issues in the culty houshold - holes in doors, the dad being a massive abusive prick and chauvinist and his wife didn't care for her kids at all, taking part in the verbal and mental abuse.
Crazy how 2000s TV showed such things but nothing was done. Nobody helped those kids, expect the swap wife - she really tried to get through to culty mum on how horrible they were treating their kids, but to no avail.
Edit: OmFG they're still producing that show