They couldn’t even arrest him because of the old statute (pre 2006, see link below).
DNA doesn’t help prosecution “logistics.” It just helps (or doesn’t) convince a jury. OJ Simpson, for instance.
Juries are the key in both criminal and civil. Except criminals have the option of a bench trial in criminal. But I digress.
This particular case is a defamation case.
https://www.nbcnews.com/think/opinio...te-ncna1077321