Can attest to that. Antromorph is actually Skeptic's main quirk that only consists transmuting an human-sized object to a person of his liking. He controls those through his computer.
The "instances" which "demonstrate" media manipulation, are skill. Using his experience and position over the company he is in. The puppets mainly support the bulk of the work tho. So, if it was the case he really has media manipulation... He wouldn't need a medium; he wouldn't need the puppets.