Quite simply: when was the last time you went in Twitter to see an intelligent argument that opposes yours? Never, because such a thing simply requires more than 280 characters, and multiple cited sources.
280 chars with a single source is enough for a "look how bad my enemies are" hot take, however.
It's a shame, because getting off social media fully is hard now - so much actual research and professional interaction requires it as well. But eurgh.