Many powerful actors, including state actors, would love to see Twitter, as a political instrument, go away. It could even be our own, or a dissident group within our own, IC. If someone can get a presidential candidate and an ex-president's twitter account to say what they want, then that is pretty much the end of Twitter as a political tool.
I hadn't really considered that the attack might be against Twitter, the corporation, itself. The BTC thing is obviously too stupid to be the objective, but if you hate Twitter, then would there be a better way to teardown the entire site than doing something like this?