Poor study
The population they used for the study was very poor IMO.
"The study was conducted by researchers affiliated with Harvard University. The researchers recruited a total of 1,726 individuals between the ages of 18 and 65 years old. "
There was ony 17% of the users that were in the dating ap cohort. "The 17 percent of dating app users were compared to the 83 percent of people who never used dating apps." I figure most of those were rather young and more apt to use steroids, so I think that throws things off unless they controlled for age statistically. Maybe they did, but the article doesn't mention it.