The funny thing about politics is that good ideas presented by the wrong source can be rejected because the source is simply untrusted. The concept of rejection of ad hominem attack is great if you are a Greek rhetorical student in the lyceum, and has never been how actual decisions are made.

Regarding this topic, there are historical and recent reasons for suggestions of cleaning, trimming, purging etc. the vote roster to be met with extreme scrutiny and skepticism. The United States simply has a bad history of using tools like that for shaping the electorate to meet a desired outcome.