DuckDB Upgrade Speed, Measured from 110M Extension Loads

Nine months of telemetry from Query.Farm's DuckDB extensions — 110 million loads — show each release landing slower than the one before it. Fourteen days in, v1.5.0 reached 33.7% of the population I can see; v1.5.5 reached 12.1%. The decline survives excluding CI traffic, excluding the v1.4 LTS line, and restricting to patch releases only.