I ask because we had a situation in Ireland just like this many years ago. It was for welfare fraud specifically and faced criticism for a few reasons. One was that the suspected levels of fraud may have been much lower than the politician was claiming. The other reason was that the cost of tackling it could likely outweigh any savings.
If it’d cost less than say 2x what it’d save, I’d say it’s beneficial. Making it obvious that corruption isn’t going to work has value, but no need to do really extensive audits just to get the last 0.1% of mistakes/fraud.