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.
The specifics matter, but generally no.
When an actual fraud investigation is being done into something major like a casino laundering money, my government tends not to turn it into a media circus until after investigations are underway.
When a politician tells me they want to ‘tackle fraud’, especially welfare fraud, I hear “I want to arrest people for being poor”. It sounds like a dog-whistle to me, because every time I hear it used, it’s by people bearing a “the cruelty is the point” mindset.