It also thrives in "hot takes" that might sound smart at first glance but are incredibly ignorant if you analyse them. Everything is oversimplified to fit the character limit, but nobody seems to notice. It's ignorant hot-takes in answer to other ignorant hot-takes. TikTok is basically the same btw, but in video format.
I first thought the flaw with twitter was that people tweeted insights with a minimal of background or literature research. This leads to shallow analysis of problems others have spent years thinking about.
I realized later that the more accurate flaw is not that, but correlated to that. The real flaw is that it's a breeding ground for low-effort takes. The person espousing some grand theory of life can tweet it after thinking about it for just a few minutes. This leads to theories that not only are not exposed to peer review, but theories that literally the writer herself hasn't spend more than a few minutes thinking carefully about.
If you only have to type 140-characters, you get both really great theories distilled, and fleeting thoughtlets.
Like all social media it values speed way more than anything else. Even on HN you’ll see it. Hundred page document gets posted, but the first comments will be from people who clearly couldn’t have read it.