Well, they haven't uncovered any signfiicant fraud at all. Just claiming that there are "a lot" of 160 year olds getting social security that shouldn't get it, but they haven't provided any hard data to back their claims about widespread fraud. Besides, we all knew that there was SOME social security and medicare fraud. I'm still waiting to hear about all the new findings of fraud going on.
As far as cuts, the problem is that they are deciding on their own what to cut. All of these cuts should be approved by Congress. As far as which ones are the most harmful to Americans, that is a matter of opinion. For me, I'd say firing inspector generals from all of the largest agencies, firing attorneys simply for working on the Jan 6 investigation (as they were instructed), pausing all federal grants and loans, and shutting down the consumer financial protection bureau are the worst ones.