One explanation might be that historically there seemed to have been somewhat of a divide between people worrying about s-risks and x-risks (which were ~ suffering-focused and ~ classic utilitarians), and this framing might’ve helped getting more cooperation started.
Good framing, but I’m surprised they went for it since it partially obscures S behind its larger more popular brother X.
One explanation might be that historically there seemed to have been somewhat of a divide between people worrying about s-risks and x-risks (which were ~ suffering-focused and ~ classic utilitarians), and this framing might’ve helped getting more cooperation started.