Here is the abstract of the linked paper: https://psycnet.apa.org/doiLanding?doi=10.1037%2Ffam0001390

The article does not accurately reflect even the abstract, so I would not count on it to accurately reflect the full paper.

From the article (emphasis mine):

  the researchers analyzed shifting dynamics of over 11,000 families with kids *for a decade*

From the paper abstract (emphasis mine):

  The present study examined the longitudinal, bidirectional associations between early adolescents’ electronic media use and family conflict *across 3 years*

As someone who used a lot of screens and was lonely in my youth, I can say with confidence that it was a response the family conflict in my home, not the creator of it. If my parents provided me a stable, non-abusive home, if they prioritized my emotional health and needs, I would've happily spent my time with them, not with randoms I found on the internet.