I guess it's nice to bring awareness to these cases, but the idea that the individuals or circumstances have anything in common doesn't fly with me.
I think what they share in common is to have disappeared in a vast wilderness with major highways travelling through (except Ryan Schtuka, the ski resort is very off the beaten track).
It's perhaps interesting to contemplate the ways the cases are different.
In the Provencher/Scurr case, the vehicle was not damaged in any way. It was evidently driven by the perps and left there, in order to distract police from where they should look for the crime scene. The murdered men were older and known to have been involved with drug smuggling in the past (thereby being a threat to someone), and police knew early on who they went to visit and why, and suspected foul play because of that. Their bodies evidently revealed they were murdered.
Ben Tyner is known to have been in a particular place and time just before disappearing. His vehicle was left intact, and it appears as though an elaborate cover story was rigged to try to make it appear that he had an accident, but IMO police aren't buying it. So this case also shows signs of a pre-determined murder plot, though there's no indication or suggestion Tyner was ever involved with drugs, on the contrary would probably have reported it. He was older and mature enough to be a threat to someone.
Ryan Schutka was also known to be in a particular place and time, a short walk to his home, when he disappeared very late on a cold night. He seems to have been amongst other very young people his own age, who, in ski resorts, are often into partying and consuming recreational drugs. I can't see him as a threat to anyone. So whatever happened was, IMO, misadventure, rather than a plot by experienced/knowledgable killer(s).
So little is known about Luke Neville, one cannot speculate. His situation is somewhat similar to Marshal's, in that his truck was found burnt out. This rules out a simple accident.
I don't know much about burning trucks, but if we consider the case of the young BC killers from summer 2019, burning one's vehicle is something the driver seems to do, to cover their own tracks and, perhaps symbolically, burn one's own bridges back to normal life.
Consider, if you have hurt or killed someone and hidden their body. How long and far would you want to drive that person's vehicle? Firstly, you need to have another car and driver follow you, unless you plan to steal another vehicle. So you keep to places where you can call on those backups. Secondly, you don't want to get stopped by police, so you don't attract attention to yourself. If the vehicle is old, you might be concerned if it broke down, or had something minor wrong with it, that police will stop you for. So equally, you probably wouldn't want to attract attention by setting fire to the vehicle, unless you'd stolen another car, or were on a suicide mission.
IMO, Marshal drove his own truck and burnt it so he'd have no way to get back to his life, if he changed his mind. Then he started walking, and disappeared far off the trails.
The one thing this area of Pemberton has, that the Rockies don't have, is that you really can disappear into the mountains and never be found.
ETA: MOO
