Also, look in to a brick (or a FOSS clone). I have one and it is unreasonably effective — I've probably halved my screen time with one.
Maybe this is just because I only use xcancel because I don't have an account, but any time I look at a tweet, I'm met with blocks upon blocks of day-running racist screed. Reddit is also bad in the sense that most traffic (I'd wager 95% of frontpage traffic) is just bots designed to provoke. Substack notes are better, but their algorithm still occasionally rewards ragebait, low-signal content, and x-shaped racist idiots. What have others done to solve this problem?
Another thing that all of these task share in common is that they aren't easily verifiable. All of those tasks have very slow (or very weak) reward signals such that it is harder to RLVR on them. Scientific research is a bit of an anomaly in this list, as some of it can be verified computationally and doesn't need a physical lab. However, game design, app ideas, novels and funny jokes, the reward signal is popularity. Because popularity is innately bottlenecked on humans (and even then, high-status humans have an outsize influence on the reward signal here... (read more)