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.
Voting for the lesser of two evils can still be part of a strategy that acknowledges the inadequacy of mainstream political solutions. But it needs to be combined with other, more activist political activities.