What you're saying is true, but I'm not sure it would be such a bad thing, from a quality curation perspective. Manual voters would identify the good posts, then auto-vote bots would just be magnifying the rewards to the authors of those posts. It does allow the bots to benefit from the work of the manual curators to some extent, but I think it would be better than the situation now.

Effectively, it would be allowing bots to do vote trailing based on more than one manual curator.