None of your items could be considered reasonable doubt.
A reasonable doubt is a doubt based upon reason and common sense and is not based purely on speculation. It may arise from a careful and impartial consideration of all the evidence, or from lack of evidence.
Your quote doesn’t apply in the least to what I said.
In fact, you are the one not considering all the evidence when you ignore all the details, inconsistencies, and provenance issues surrounding certain evidence, and just blindly go with “anonymous letter says so”.