From the article: "...[A]mong the women that report being "highly satisfied" with their lives, 29 percent are cohabitating, 33 percent are single, and 47 percent are married."

That would seem to suggest that "upbeat roommates" are, on average, worse for women than singledom or marriage, no? Your personal experience notwithstanding, the statistics (at least for this claim) are on the side of the article.