It is 2% of all claims. That's a tiny proportion.
Also, again, there are no jobs. There are not enough jobs for those who want to work.
Cutting benefits is not going to save money. It is going to have a massive financial and social cost. Those unable to work are not going to suddenly recover, and the 2% of fraudsters who can work are not going to be able to find a job when there are half as many jobs as there are active job seekers, and they are up against people with a long history of work experience.
Instead, what will happen is people will starve, as proven the last time we tried something like this. People died. Suicide and self-harm rates will skyrocket, and crime, sex work, and drug use will skyrocket. The cost to the NHS, the police, and wider society will be immeasurable.
Now, forcing massive conglomerates like Tesco, Asda, Starbucks, and Amazon to pay the real living wage would not only save money by reducing the amount of UC paid out, but would also help grow the economy, as most of these businesses are foreign-owned.