Good point on the time already flown.
Still, and this is purely conjecture because we don’t know the actual cause and don’t know their previous mountain flying experience (it could be that they’ve done this several times, had training, etc), so I’m speaking in generalities here in hopes that maybe someone considering this will understand the gravity of it:
This isn’t the first accident we’ve seen upon encountering the mountains on a “Great American Cross-Country.” Not that it doesn’t happen to locals, too, but it always feels a little extra tragic when this kind of thing happens to a flatlander the first time they fly into the mountains.
Yet, inexperienced people still feel called to do this and there’s absolutely nothing stopping a pilot from attempting to do so. Nothing. And if your training wasn’t done by someone who has experience and knows better, the hazards and necessary decision-making involved often get glossed over. Maybe you think your plane is capable, maybe you think your instrumentation, your EFB will get you through it. And yep, plenty do make it. All I’m saying is take it seriously. Understand that you may not know what you don’t know and by the time you do get that point, it might be too late.