It is , like any murder, hard to fathom. One doesn't want to face it that two young baby-faced blokes, charming and helpful, except for a few odd behavioral issues, a bit of harmless fun that went too far, the usual japes and pranks of young blokes anywhere , suddenly turned into savage and relentless killers.
It is horrible, murder is horrible, and young offenders, with such capacity to kill in such a savage , callous, executionary manner, no mercy shown, is by it's very nature, unfathomable.
But it does happen. These two and not the first, wont be the last, and at least were stopped at three murders, before it really escalated.
Avoiding the reality by creating a phantom , Merlin -like apparition that haunts the highways of Manitoba, like a sort of Canadian Big Foot, appearing and disappearing at whim, is hardly conducive to rational exchange of views.
It's not as if there is another realistic suspect, even with the most tenuous link to the murders has been produced.