First, it shows how for activists determined to block a project it’s only necessary to make one jurisdiction say no. This is akin to the argument in computer security that the structure of vulnerabilities favours attackers over defenders; defenders need to protect every possible vector, while attackers just need one way in.
Second, this validates pipeline delay as a strategy. Using all available legal and political means to delay a project raises investor concern and probably the cost of financing. Since the point of blocking pipelines is blocking upstream bitumen sands development, creating uncertainty about any part of production, transport, and sales may help us avoid building inappropriate high carbon infrastructure.
Third, this supports George Hoberg’s concern (also raised by David Mackay) that the environmental movement has become highly capable at blocking projects but often lacks and skills and inclination to say yes to climate safe forms of energy.