Mining problems have the huge benefit that they're relatively localized and get a lot less severe when you choose to stop mining there. Fixing environmental problems from mining also doesn't require global coordination.

Global warming on the other hand threatens the whole biome and stopping the release of CO2 doesn't stop global warming once tipping points are reached. You also need global agreement to meaningfully do something about it.

(You also have to keep in mind that fuel for ICEs doesn't magically appear. Extracting oil and transporting it isn't particularly good for the local environment either.)