See above video for the reasoning. For why Russia blew it up/ This man lays out a good argument.
Perhaps he does lay out a ‘good argument’ but counter ‘good arguments’ against Russia doing such can easily be found and provided.
Having a ‘good argument’ still does not prove conclusively that Russia blew up its own pipeline. This is the same mantra crap that was put out about Russia shelling themselves in a nuclear power plant they have control over, etc.