Will organic search traffic to human authored content sites decline by over 30% from 2025 levels by 2029?

Organic search traffic to human-authored content has faced headwinds from AI-generated content and search algorithm changes (Google's March 2024 core update explicitly targeted low-quality content), but a 30%+ decline by 2029 requires sustained, severe disruption. Historical precedent shows search traffic shifts are typically gradual—the mobile transition took 5+ years to fully manifest. Current data indicates Google maintains strong incentives to preserve quality content (their business model depends on relevant results), and human-authored content still dominates top search rankings. A 30% decline would require either: (1) dominant AI search replacement (currently <10% market share for alternatives like Perplexity), (2) sustained algorithmic suppression of human content (contradicts recent quality focus), or (3) major structural collapse in SEO-dependent traffic. These scenarios combined face significant headwinds, though AI disruption acceleration remains a material risk.