>>124642499He's not from a gorillion years ago, he's from the 31st Century, so likely pretty typical for a European at that point. Nor is he a God, he's just immortal and has a pocket dimension where the Infinity Stones aren't functional.
None of the TVA guys are shown defying the stones within a timeline itself, they are just inert in Kang's time-pocket with it's special anti-magic rules.
Basically he's what Strange would have been if he'd studied 14,000,000,000,000,000,000 outcomes for centuries.
