The study included 8324 children (53% boys; mean age: 9.9 years). On average, children spent 2.3 hours/day watching television/videos, 1.4 hours/day on social media, and 1.5 hours/day playing video games. Average social media use was associated with increased inattention symptoms over time (β [SE], 0.03 [0.01]; P<0.001), with a cumulative four-year effect of β=0.15 [SE]=0.03; P<0.001). No associations were found between playing video games or watching television/videos and ADHD-related symptoms. The association between social media use and inattention symptoms was not moderated by sex, ADHD diagnosis, PGS-ADHD, or ADHD medication status. Inattention symptoms were not associated with increased social media use over time.

…aap.org/…/Digital-Media-Genetics-and-Risk-for-AD…

It’s insignificant at best, but more likely its just conflating phone usage in general with social media specifically.