John, I thought you lived in Bradford. This premise of this show is not unrealistic.
I can see where you're wanting this to go, and I'm not following, other than to lift this quote from the above story on the website:
Harry Benson, from the Marriage Foundation, said the principle of arranged marriage was proven to be successful, but warned it required the strong social support of families and plenty of time to adapt.
Saying the programme’s opt-out clause risked “trivialising” the commitment required for marriage, he added: “Instead of getting married with clarity and intent about their future, these couples will still be in a relationship that is riddled with ambiguity. Nobody gets married with an easy opt-out clause a few weeks later. It simply undermines commitment from the very beginning.”
I've no idea what the Marriage Foundation is, but I think their Mr Benson has a fair point here.
And it is a risible idea for a TV show.