The cost of commuting on the environment is extremely high. We should be offering incentives to companies to switch to remote work. If 20% of jobs permanently switched to remote, the impact on carbon emissions would be immediate, and extremely positive.
Would it? Remote work might incentive overall less density, which, on the whole, leads to a bigger carbon footprint per capita.
But a big part of why lower density is bad is because it leads to lots of commuting.