The loss is tragic but I’m sorry GPS jamming was not a factor here. There was a NOTAM indicating it’s going on, the pilots should have been aware and it appears when they reached out with a request the jamming was stopped. It was a visual approach at a moonless night at an airport in high terrain, this was pilot error unfortunately.
Luckily, aviation investigations haven't concluded with "pilot error" for over half a century, or else there would be a lot more accidents as we never fixed any of the actual causes and just blamed the dead pilots.
Certainly it's a lot less common than it used to be. There's a bigger push to find underlying causes that can be fixed, and not just say "the pilot forgot to perform a crucial step out of the several dozen crucial pre-flight items they were supposed to have committed to memory, sucks to be them" or whatever. But sometimes it really is "the pilot did a dumb and shouldn't have," especially for smaller planes with less experienced pilots.