Based on the one where he goes to Johannesburg, he's a complete idiot. Not in that the whole safety, blah, blah. But in that he can't understand the fact that everything isn't like it is in his perfect little British world. For instance, he made a comment about physical violence by the police, saying it's inhumane and they should be treated like the British police treat offenders, which is a joke. It's like comparing a child to a serial killer in terms of the different levels of crime and violence of the two respective countries saying they should be handled the same.
He can understand it better than anyone posting on this forum, since I'm sure he's the only one who's been to Johannesburg. I have the feeling he didn't just want to imagine what it's like in bad countries ( anyone can do that ), so he went and experienced one. About your example, how familiar are you with being whipped? The reason "beating it out of them" doesn't work for a justice system is because even if the guy didn't do it, his instinct - after so much pain - is to confess to the crime so the pain will stop. This is understood by modernized countries, and it's why we don't just waterboard every suspect in a case. Not to mention that beating and convicting the wrong person often just makes everyone more angry, which is the last thing these people need. So, in conclusion, if they didn't lack the manpower in Johannesburg, the best system for policing it would be similar to how the Brits do it.
TL;DR: He's a complete moron who think's he's smart and witty.
Thankyou for summing up my post.