“According to the report, Bitcoin mining can reduce global emissions by up to 8% by 2030. This can be done by converting the world’s wasted methane emissions into less harmful emissions. The report cited a theoretical case saying that using captured methane to power Bitcoin mining operations can reduce the amount of methane vented into the atmosphere.”
While instinctually counterintuitive, bitcoin mining can actually be a net good when it comes to its environmental impact (among other net goods it offers).