To weigh the evidence and assign guilt is not rail roading. All this talk of swinging, etc. takes the trial on a ride around the park to a dead end. To say it isn't sensationalizing is naive. I disagree that it be promoted as important evidence that someone else could have committed the crime.
The blood and hair is on this man and in his motor home, he cannot account for where he was and if he was alone, he has child porn in his possession. I don't know what possible evidence could trump those facts.
If DW is innocent he knows what the DNA evidence is and will testify. If the DNA evidence is substantal he will not testify and I will likely conclude him guilty as will the jury.
Pretty scrimpy defenses mandated by the court are railroading. In a case like this, absent direct evidence or witnesses to murder, the question of who else could of done it is valid, as are the risks and dangers that the "parents" activities caused that could contribute to exposure to some other bad actor. Some stuff draws flies, and somehow in this case flies were drawn.
Now if the parents had quiet lives and didn't have the scum of the neighborhood over every way from Sunday, then the wee bit of evidence so far presented would weigh more heavy. But they did invite the bad winds in, and the wee little evidence can not be used to hang a man.