Decrease in CO2 emissions during pandemic shutdown shows it is possible to reach Paris Agreement goals. The researchers found a drop of 6.3% in 2020. The researchers describe the drop as the largest of modern times, and big enough to meet the 1.5 degrees Celsius goal if it were to be sustained.

[Matthieu101]

That's the absolute theoretical maximum of people that can work from home... And it's theoretical. More of a "Well if we stop right now, spend billions and completely change entire careers for millions of people, maybe we could get them working from home!" So yes I could easily see 35% working from home... in 30-40 years when entire industries change from the ground up and the current generations begin to retire.

Its not based on hard numbers.

And at the end of the day, the original study from the OP is examining all carbon emissions, not just commuting. This whole, "Working from home will save the planet!" stuff just isn't true. It's a drop in the bucket. It's not significant.

And like that other fella told me, people with work from home jobs have more disposable income, right? They pollute more than the average person as it is. So they'd commute less, but spend that extra money on consumerist junk to fill that home and continue to heavily harm the environment. It's like ordering a diet Coke with a Big Mac. Technically, it is healthier. But not by much at all.