I feel like that misses a lot about how politics work. Someone just getting into office is often far too ineffective for us to allow our system to be run by first and second term legislators. First term legislators are often fairly useless because they are still learning the job. I’m not saying there is no solution to that, but it would have to be coupled with massive reform around the support mechanisms for our legislatures. You think the federal government is slow moving now, just wait until everyone in office has no idea how to do their job.

Edit: Also as others have pointed out, you’d also be terming very competent legislators along with the corrupt ones. I think people overestimate the amount of corruption in the legislative branch, due to the media creating a confirmation bias. For every evil corrupt piece of shit, there are 5-10 people you’ve never heard of just doing what they think is right (even if you don’t agree with them).

Edit2: maybe a better solution is a dementia/Alzheimer’s in person test given to all legislators past 65 every year, evaluated by a 3 doctor panel. If you fail the test, you’re legally prevented from running and forced to resign if in office. If removed the political party impacted gets to appoint the replacement, otherwise if there is no political party (true independent) the executive branch of that state gets to appoint replacement.