I recently became a member of the #BCGreenParty, and I sense a similar conceptual "thing" going on. If you centre a party on socialism, that's your praxis: the ideas you prize that lead to the actions you take.

If you centre a party on environmentalism, then *that* is your #praxis. You act for the climate, which is to say our collective survival in the face of, to paraphrase Doctorow, the capitalist #xenoforming of the Earth such that it's fit only for alien life, not human life.