Isn't it established early that Shaherezade is basically the lynchpin of the oriental capital? And corrupting her means corrupting everyone in oriental capital, except for maybe Jasmine and Ali-baba. Besides, corrupting Elza similarly corrupted the... whatever that country was called back in Ch.1.From my point of view, i think what happened is the the objective of ch2 was to corrupt the whole entirety of the oriental capital, but salty realized how big of a project that would be so he just scraped the whole thing and just kept the corruption of jasmine and sharizade, though might seem like a stupid theory but it is possible.
Like think about it salty wouldn't do this to us, especially after a well built ch1, I don't think the lack of "corruptible android characters" is intentional.