To be clear: there’s a night-and-day difference between Biden and Trump, with the former having actually taking significant action, and being likely to take more if reelected. Trump will look to maximize both extraction and consumption of fossil fuels in a way that Biden simply didn’t and won’t.
Pretty sure it’s not a binary outcome. We already have warming at levels that is detrimental, and we’re not going to stop it. All we have left is mitigating actions.