I doubt anyone is going on Elon’s word alone. Maybe initially as a reaction. DOGE is an agency which means it’ll have to report findings in an official capacity of some sort.
I don’t know what data you’re talking about and knowledge to understand it. Sounds like you work there or something. SS makes payments in the billions, it better have a perfect idea of where those payments are going. If they don’t, then they must be fired. We wouldn’t tolerate that in the private sector, why should we in the public?