You can't make the medicines he was making with herbs, though? It requires a level of infrastructure and knowledge of chemistry that doesn't exist if they haven't even figured out microscopes yet.

So he is establishing a herb farm even though he can fabricate anything. Why the hell did the damn author give him such lame abilities if it had no bearing on the story? Replace the whole medicine god with the character telling his isekai secret to his father and all of this could have been worlds better than superhuman god powers.

That’s nice of the father <3