I think the primary trend isn't based on the agreement but on the economic reality that solar panels are cheap and still getting cheaper. You can speed it up or slow it down, but it's not reversible at this point. You might have four years of slowboating, but that only matters if we're on the edge of disaster. If we're already committed to disaster, to the extent that we need radical interventions to plausibly achieve success, whether you slowboat the trend doesn't matter.