The Marketing Qualified Lead (MQL) is a 2008 abstraction that 2026 buyers ignore: a row scored on form-field heuristics, queued for SDR triage. Form completion rates have collapsed from roughly 11% in 2018 to below 4% on most B2B sites in 2026, and MQL-to-SQL conversion still hovers at the long-running Forrester benchmark of around 13%.