Rush to judgment? Ok, here is what is stated in the article:
1) "'Everything here points toward negligence,' said Conservation Officer Mark Ober."
2) "The hikers called 911 for help from the summit, prompting a nearly six-hour search in the dark." (Ober)
3) "The dad and daughter were not wearing hiking gear and the daughter was wearing shorts when they set out around 3 p.m. to hike to the top of a 5,000 footer, where it was about 50 degrees at the summit" (Ober)
If they were ON the summit when they called 911, it was at best "getting" dark before they got there. Even Captain Obvious could figure out that if it's getting dark before you get to the summit, it won't get any lighter...until morning.
Since it was stated by the Conservation officer, I don't see anyone here judging anything. As to why the criticism is aimed at the Dad, if it were a Mom and Son, I'm wagering it would be directed at the Mom.