Dark mode can be done by changing the template. You can install a new template, or there's an admin panel to change the colors, and you can get dark mode that way. But it's true that there's no dark mode for some and light mode for others option.
Not everyone can have the luxury of working from home. Most knowledge workers can. Cooks and waitstaff, teachers, mechanics, etc. have to work at the "office".
One of my favorites is an older book by John Brunner: The Crucible of Time. It's unusual because there are no humans anywhere. It's about a culture of very alien beings that periodically get decimated by something (not another species). It follows a movement to improve science to the point where they can understand what's going on, and prevent/escape from it. A really good book
So they could have bought the site and taken care of it for minimal cost.