Bruce, nobody here on these message Boards has an answer to your question "Why doesn't Ancestry.com remove information that isn't correct."
As previously explained, Ancestry.com DOES care if information is right or wrong, however they believe that people have a right to be wrong. And Ancestry.com respects our rights to be wrong.
For example, if you believe that Adam and Eve are your great grandparents and wish to include them in your family tree, Ancestry.com will allow you to do that.
I've already recommended that you contact WorldFamilyTree and take this issue up with THEM. Your complaint is well noted, here. However, there is nothing that anyone here on the message boards can do.
This is a Message Board, and not a Complaint Forum. So I ask that this thread cease with complaints here, and begin by sending emails to the referrals I posted in the first two posts of mine.