I assume this is written by a UI designer or something, and it certainly feels like "notes" and not a cohesive article. Claiming "The six signals of quality in software" and then listing only user-facing concerns and including subjective items like "Beauty: Is the software as aesthetically pleasing as possible?" is questionable.

I'm interested in quality, but I didn't find these notes enlightening, and couldn't even finish the article.

Yeah, when a software focuses on beauty I only have to wonder what they sacrificed to achieve it.