Literally all webcam 'problems' come down to expecting your webcam to perform well in conditions that even a $5000 dSLR wouldn't do a particularly good job in. Buy a light and all of the issues from the article will magically disappear.
This article controls for lighting, showing the results of different types of cameras in different lighting conditions, and showing that even with good lighting, all of the webcams are still poor, and most are terrible. And they’re all distinctly worse than any Apple phones from the last few years (and even the front-facing camera from an Apple phone from five years ago is better than half of them).
Personally, I've been thinking about how to sandblast the lens on my webcam to permanently fog it. Who would even care? I think nobody.
In the en I convinced my wife to just use the DSLR (she was hesitant at first because of the extra hassle). A modern DSL had good IQ even ad candlelight, you really almost can't mess it up. Only way to destroy the image is to use different color lights (warm lightbulb on left side and natural light from a window on the right side will look weird on every camera I know of)
And also, not everyone wants to sit in front of a bright light
Nikon offer a free webcam utility [0] that allows recent DSLRs (and mirrorless) to be used as a webcam when plugged into a PC. I tried it with my D850. The advantage is, predictably, awesome optics. The downsides were a) finding a place on my desk for the camera and some sort of mount b) the camera battery gets eaten really quickly.
Interestingly, the webcam utility isn't available for the smallest Nikon cameras - the Coolpix range - so I guess there won't be a dedicated Nikon webcam.
[0] https://downloadcenter.nikonimglib.com/en/products/548/Webca...
Even a highly-optimized “let’s steal a smartphone camera” webcam would never cost under $100, so it would sell extremely little.