It's sad to see such a great platform circling the tubes, but I think the occasional death of a large social network is a net positive benefit for the world.
The shitty thing here is that it didn't "have to" die. It simply should not be possible for a single powerful individual to destroy something used by millions because they don't like the way it is used.
Twitter is not dying.
Amusingly, journalists have been proclaiming the death and/or resurrection of Twitter pretty much since its inception.