I've muted around 3000 accounts and 200 words, which is a lot when you consider I don't even post on the platform I just read it and still my feed will have political hot takes slip through the cracks.
Twitter has the data, they could put a huge "Politics On/Off" switch in preferences but they choose not to because they know that forcing me to look at politics is both more profitable, ideologically I think they think controlling what political message I see is important too and they're fine with the tradeoff being mental health damage.
Speaking personally, there are several people I follow who never actually generated real content. Instead they just liked asinine, toxic political takes, which then filled my feed.
https://blog.twitter.com/en_us/topics/company/2020/2020-elec...
For example, I unfollowed someone who started to post photos of their every meal. And I unfollowed my own mother because she tends to repost every scare "chain letter" that comes across her :)
Author's conclusion:
> This paper finds that social media usage decreases the level of depressive symptoms employing a two-way fixed effects model. Direct information on people’s feelings about using social media also supports that using social media can be beneficial. This result implicates that society may have underestimated the importance and contribution of social media.
There's a lot which can be discussed in terms of what is being measured in this study, and what else might make sense to measure. Or how this study's results compare against other similar studies.