I think both of you are making a lot of assumptions without providing any sources to back up your own anecdotal experiences. Also related, but HN could really use an optional country-flag next to each user's name so that we could at least see what country people are referring to respective their experiences which they state as "the way it is".
> Home temperature is fairly consistent over the day.
You must live in a mild climate where the outside temperature doesn't change much because everywhere I've lived in the world, you constantly turn on/off heating/fans/air-conditioning depending on the season and time of day.
> Commuting costs completely dominate in terms of energy costs.
Assuming usage of cars. Leave the US and generally public transportation is a thing used by most people. The trains/trams/buses still travel the same routes and times as before-pandemic times.
> The running the same computer hardware at home or the office
Why is that? My PCs at work each use ~150W and I never turn them off because Wake-On-Lan doesn't always work. I presume it's the same for most of my 700 co-workers who also WFH. That's a lot of KW and not to be scoffed at.
> Radio’s use minimal electricity ~25w
You are taking the minimal example of radio. I would guess that more than a negligible amount of people have something more substantial at home which uses more than 25w (including amp/speakers/wifi to connect to Alexa, etc), granted it's probably still not much and could even balance out with people who don't listen to radio while working? Who knows, IMO it's futile to even try to calculate this value globally.