I had to address this part of your post. The FBI NEVER said that DTL was white. The "Task Force" did, and that was their mistake. The "Task Force" only released portions of the profile that they wanted the public to see. The whole profile was NEVER released until DTL was arrested. When the "Task Force" said he was white, the FBI didn't agree or disagree. However, it is rare to have a serial killer that crosses racial lines (if that's the right word). The "Task Force" couldn't find their way out of a paper bag when it was first formed. I think it was chance that DTL was swabbed and caught. If there ever was a "Task Force" on how to do all the wrong things, "The Baton Rouge Serial Killer Task Force" was it.
DTL should have been arrested years before he was. He fit the profile almost to perfection.
JMO, IMO, :moo:, and all other disclaimers.