That would be my guess for having Plagueis in the show, along with the whole concept that Osha and Mae are a vergence and were created.So he gets a hold of Mae and/or Osha and studying them sets him off to the path of eventually creating Anakin?
Yes, in the past. Yes.Anakin was not created by the Sith; this idea has been repeatedly debunked by pretty much everyone in a high-level creative position at Lucasfilm.