Confusing and hypocritical article.
The title asserts that density causes jobs, or somehow leads to better jobs, yet the article goes on to say, "One can’t create wealth just by crowding people together."
This article is all over the place, contradicts itself multiple times, and has no conclusion. It constantly appeals to authority by vague references like "... according to two decades’ worth of research from economists." Never mentioning which economists or what research.
Save yourself 10 minutes. This is all the article says: "Cities have more jobs due to many different factors, some of which are exclusive to cities."