Hmm, you really should start with some solid evidence for your basic premise that twitter is dying beyond vague empirical observations based on a sample of one (!) person. Building a pyramid of arguments without checking if the foundation is sound usually doesn’t end well ( Das Kapital is my favorite example of that). As far as abuse, it is endemic on internet and hardly unique to twitter. More to the point, it’s a not a new decease which twitter just caught recently. It was there from the very start, so why is it suddenly becoming terminal now? In fact, twitter has built pretty good anti-abuse tools over time. To be sure, twitter has plenty of problems as a platform and as a business and abuse is one but I don’t find it’s convincing that abuse is THE number one issue twitter’s got. I would personally list thinks like format limitations and some hostile anti-user and anti-developer moves ahead of abuse.