It's not simply what trump might do, it is what biden can't do if he's not in office. The "transitory" inflation biden said we had has been anything but transitory. It has put extreme hardship on the lower income segment of society. More massive govt spending and epa mandates that make cars, appliances, etc more expensive are only going to exasperate that problem. Not just now but in the future as well. Coming ev mandates for semi trucks are would explode costs for everything as well as cause serious supply chain issues.
The kicker to all this is that he is only doing it for political purposes. He doesn't give two craps about poor people because he knows he has them by the balls with govt support. He is imply pandering to the stupid climate crowd who have seemingly become anti science all of a sudden. The fact of the matter is even if you think we(as human beings) can significantly change the climate for the better, even scientists that support that view will tell you it is not going to matter what we do if China, in particular, and other undeveloped/underdeveloped nations that are left out of all the climate agreements do not do the same thing. Without their cooperation it's like throwing a snowball at 100K acre forest fire. This is just one example of the idiocy the country can not afford.