I usually have a lot of respect for Ben, but he's lost the plot here.
The nearest airport is not necessarily the best one.
Canberra has challenges due to its high density altitude and terrain very close to the airport, making a go around on one engine challenging to say the least.
He's also suggesting Camden or a private strip. Either would be unacceptable for a number of reasons. High numbers of GA aircraft at one, zero emergency services at another.
A crew has to balance all of these competing priorities before making a judgement call as to what is the best solution to the problem given all of the facts.
If the aircraft were on fire, possibly a different story. It wasn't. It was on one engine and by all accounts flying ok and in control. Once the prop fell off there was nothing to be gained in rushing an approach into an unfamiliar airfield with compromised terrain or support issues.
In my personal opinion the crew made the absolutely correct call.
Ben. Pull your head in. You're not qualified to make the comment you have.