Musk is Chief Engineer at SpaceX, not just CEO, and employees, journalists and biographers consistently describe him as deeply involved in technical decisions across SpaceX and Tesla — engine choices, vehicle architecture, manufacturing design. He is named as an inventor on multiple patents. Critics fairly note he leads large expert teams (SpaceX has world-class engineers like propulsion pioneer Tom Mueller) and has no formal engineering degree, so crediting him as a lone genius overstates it. But the opposite claim — that he does "no" engineering — is contradicted by his documented role, his patents, and countless first-hand accounts of him running detailed design reviews. Leading the engineering of reusable rockets and mass-market EVs is not the work of a passive financier.