The current problem isn’t that Alberta and Saskatchewan are landlocked per se. Many territories in the world – independent states and sub-national states – are landlocked but are very prosperous without the obstructing actions of their neighbours.
XR are prepared to go to prison and, like most cults, are prepared to wreak havoc onto the world until the world meets their demands and converts, non-violently for now. But that may change. Their sense of urgency may turn in frustration to violent desperation, prompting their twisted logic to jump to vandal criminal action.