If anything, I think the US election has emphasized how the idea that humans can come together, globally, to solve a problem that will require worldwide shared sacrifice for benefits that are largely at least one lifetime in the future is a pipe dream. Humans (and in fairness, most creatures) are fundamentally too selfish as a species to implement this kind of collective action.

Unstoppable severe climate change is coming, if not already here. Emissions continue to go up and up and up every year, the best you get is a slight pause in a year, while we need emissions to go to zero, fast. At this point the only slight hope is geoengineering, and even then I wouldn't bet on it.