Also, Twitter is not where people go to be nice. Twitter incentivizes snarky, disparaging, curt behavior because (a) it limits message length to an extent where

Also, Twitter is not where people go to be nice. Twitter incentivizes snarky, disparaging, curt behavior because (a) it limits message length to an extent where nice speech doesn't have a place (b) saying nice things gets you likes while saying not-nice things gets you retweets, and retweets are more highly valued by the algorithm.