That is not what the data researchers currently employed by Facebook said, if you read the article.
"They came to the conclusion that some of the problems were specific to Instagram, and not social media more broadly. That is especially true concerning so-called social comparison, which is when people assess their own value in relation to the attractiveness, wealth and success of others."
"'Social comparison is worse on Instagram,' states Facebook's deep dive into teen girl body-image issues in 2020, noting that TikTok, a short-video app, is grounded in performance, while users on Snapchat, a rival photo and video-sharing app, are sheltered by jokey filters that 'keep the focus on the face.' In contrast, Instagram focuses heavily on the body and lifestyle."
So I suspect that their understanding of the problem is better than yours, and that there is something about Instagram that makes it worse than generic social media.
"They came to the conclusion that some of the problems were specific to Instagram, and not social media more broadly. That is especially true concerning so-called social comparison, which is when people assess their own value in relation to the attractiveness, wealth and success of others."
"'Social comparison is worse on Instagram,' states Facebook's deep dive into teen girl body-image issues in 2020, noting that TikTok, a short-video app, is grounded in performance, while users on Snapchat, a rival photo and video-sharing app, are sheltered by jokey filters that 'keep the focus on the face.' In contrast, Instagram focuses heavily on the body and lifestyle."
So I suspect that their understanding of the problem is better than yours, and that there is something about Instagram that makes it worse than generic social media.