Study also seems weirdly partisan: for example, "During the COVID-19 pandemic, informative tweets about fatality rates and preventative measures are often more important than tweets related to political events"—important to whom? I have a feeling Republicans were more interested in the latter, while Democrats were more interested in the former.
"Adding tweets to user timelines is an especially opportune mechanism to mitigate the potential negative impacts of social media platforms. Added content could be curated using more traditional editorial values, in service to both journalists and Twitter users"—authors seem to be confused as to what Twitter is. It's NOT a newspaper, and it's absolutely not supposed to have the same editorial standards as a newspaper. Twitter has echo chambers by design. From a product standpoint, people happen to like them. So the algorithm reinforces this.
Is this healthy? I don't know, probably not, but neither is alcohol or tobacco. Maybe all social media apps should have a "surgeon general's" warning. Which seems like a way more actionable course than making social media apps use journalistic-style editorial standards (how do you even enforce that on something like TikTok?).