I'm afraid I'd have to agree with that. I honestly cannot....
Of course, you're always going to say that there was one individual who got legal aid who shouldn't have gotten it, because no system you put in place is going to be without its flaws. There's always going to be somebody who creeps in, who doesn't disclose their income as accurately as they should have done.
What, though, is the cost of policing it better? Probably that money would be better spent by putting it into legal aid rather than trying to prevent the very few people who get it but shouldn't get it.
I'm sorry, I cannot think of a single service that is currently funded that shouldn't be. If you want to ask the question in reverse, I'm happy to answer it.