These things are good or bad because of the community of people who use them, not the technology per se. And that community is shaped by both culture and moderators.
The medium is the message. Any microcblogging platform that tracks and displays engagement inherently optimizes for short form swipes and "rebuttals" and outright lies. The "real time feed" nature optimizes for taking zero time or effort to confirm anything that anyone says. Nearly everything that "breaks" on twitter and doesn't make it to actual reports was an outright lie.
You can't put a necessary amount of nuance in 140 characters.
I disagree. The shape of the instrument makes some sounds easier to make than others. Pianos are inherently polyphonic while trumpets play one note at a time. Anything made in the shape of twitter will result in twitter like behavior.