They don't have to be, but they are. And we ignore that our peril.
I'm not arguing against working from home, I think working from home is great. I'm arguing that to make progress we need to consider things like "now that so many people are working from home, what do we do to help the people who have been affected negatively by this change?" People like baristas, gas station attendants, auto mechanics, people whose livelihoods depended on everyone commuting.
In prior changes, a wave of economic growth took care of their needs. I'm not sure that's going to happen here, so I think we will need to be more intentional about it.