Instead of calling them "centralized sequencers" we should call them "single sequencers" A single sequencer is not "centralized" because it can still preserve most of the key qualities of decentralized systems such as: - verifiability - liveness - permissionlessness It only sacrifices censorship resistance but even then it can still inherit some CR from the L1 via mechanisms like inboxes TL;DR single sequencers can still be very decentralized, so calling them "centralized" is a psyop