What are the concerns about Elon Musk's involvement with the Social Security Administration?

There's significant distrust surrounding Elon Musk's access to Social Security data. As a special government employee rather than a full-time official, Musk maintains his private companies that benefit from billions in federal contracts while simultaneously making important decisions about government operations. The resignation of the Social Security Administration head highlights concerns among career officials that personal information might be misused. This unusual arrangement has created conflict as Musk 'roots around' through government, determining what stays and what goes without electoral accountability. Career professionals at the Social Security Agency worry something 'untoward' could happen with the sensitive personal data under Musk's influence.