That's not to say that they don't have a problem with hate, or that they shouldn't be working much harder on it. But I disagree that it's an essential property of the platform. Humans have a very long history of people of different perspectives hating each other even in person. For example, look at the Nadir: https://en.wikipedia.org/wiki/Nadir_of_American_race_relatio...
In the US, after the Civil War, we had the Reconstruction, a period of significantly increased racial harmony. Many people of goodwill worked hard to integrate America, with a lot of African-Americans moving into white towns. But within decades the tide turned, leading to a wave of anti-black ethic cleansing that left many places all white for many decades. This is extensively documented in Loewen's Sundown Towns: https://www.amazon.com/Sundown-Towns-Hidden-Dimension-Americ...
Nobody needed short messages or engagement metrics to do that.
Jack: "We have witnessed abuse, harassment, troll armies, manipulation through bots and human-coordination, misinformation campaigns, and increasingly divisive echo chambers. We aren’t proud of how people have taken advantage of our service, or our inability to address it fast enough"
So the ceo himself disagrees with you there.
You could take your personal gun to the shooting range and diligently hone your sharpshooting skills. That doesn't excuse what the majority of the planet uses guns for. The platform is definitely culpable. It was precisely engineered for low latency quick trigger back and forth responses which give you zero time to think. Think of it like HFTs. If you charge 20 cents per order, your order book would frankly evaporate, instead of being stuffed with fake orders, you wouldn't even need L2. You could artificially delay each tweet so it gets posted a half hour after you hit send. The dynamics will be quite different, I guarantee that. The dopamine rush will dissipate rapidly & so will the impressions & clicks.
As an aside, the latency in Twitter conversations is 1-3 orders of magnitude slower than real-life (or on-TV) conversation, so you may need to rethink your belief that it's uniquely bad.