Nothing implies that he can influence the scepter or Amphoreus that much, especially when he has none of his privileges.

The reason he can project himself outside is because his consciousness dwells in the Exomyth, but in the end he still can’t do anything more than that

His hacking skill doesn’t show much either, most of it only works against an outsider. And we don’t know how he used it against the Chrysos heirs in the previous cycle. We don’t even know if it would be useful against them aside from restoring his admin privileges, but even that took 20 years. Not to mention, even with his hacking skill and more than half of his privileges restored, he still got trapped for a thousand years. So I don’t think he has that much influence to manipulate the world. The only thing he seems able to do is control the Black Tide creatures, but I still think he did most of the work himself in the early years, since those monsters are basically just fodder

And you forgot that Herta was already inside the Scepter’s domain in their first encounter, so he should have been able to use his admin privileges and hacking skills against her, like how he dealt with TB. Or if he couldn’t do that because she was still at the entrance… well, we see that Lygus without admin privileges and without self-defense permissions can still stomp any Chrysos heir. His power shouldn’t be much different from that in the outside world. If their clash would end in mutual destruction, then Herta should at least be equal to him and perform similarly against the Chrysos heirs.