See this is just thing the commenter you are replying to is saying.
Just read the comments in your second link tearing apart the study.
Given the replication crisis in psychology, the authors make bad choices in the experiment design that are not justifiable in 2022.
How about my third link?
I'm getting a 502 error trying to access the original content. It doesn't appear to be a scientific study, but rather a testimony from a Facebook executive talking about how they disregarded user safety in the development of algorithms that increased engagement. That's not quite what I'm looking for, though. I'd like to see something examining the effects of those behaviors on the population.
I will say that the lengths the executive goes to to compare social media with tobacco degrade the quality of the argument in my opinion; science tends to ask the question and then seek the answer. Arguments like this seem to start with the answer (it's like Big Tobacco) and then construct the argument accordingly.