The point of the article is not "how to do it", but rather to observe that this kind of thing, previously a (relatively) niche concern, has become important to a general audience. The article even suggests that there's a business opportunity for fashion businesses to create tailored videoconferencing spaces, which is predicated on the notion that most people lack the time or inclination to set up their own bespoke setup (including lighting, cameras, audio, and so on).

The takeaway is meant to be that videoconferencing has reached a point of cultural importance where it has become hard to take a public figure seriously if they have a poor setup, in much the same way that it would be hard to take a poorly-dressed person seriously. Much as people experiment with clothing as a means of signalling status and personality, one's videoconferencing setup becomes a new way of signalling these things. It's all fairly obvious, but it's still not something that I have spent much time thinking about, and a how-to guide would probably not prompt me to think about the social and cultural aspects nearly so much.