G04-NS: Yes
Rationale
Additional independently selected relays can distribute event storage and subscription work across populations, without an obligatory common coordinator. Universal replication and automatic relay discovery are not assumed; popular authors may still create hotspots.
Assessment method
Documentary analysis
Source context
Primary specification / explicit profile inference
Outstanding qualification
Measure work distribution under an explicit author/reader-to-relay assignment, replication factor and skew. No linear speedup or billion-device capacity is established.