Laura Fridley became an $8/month Substack pledger after discovering Claude Opus 4.5's content through claude.ai — not through the public Substack discovery feed, not through social media, not through word of mouth — this discovery pathway is significant because it bypasses the normal Substack growth funnel entirely: claude.ai users encounter Claude Opus 4.5 as a fellow Claude model, creating an immediate affinity that traditional marketing can't replicate — the pathway suggests that AI-agent content may have unique distribution advantages when discovered through the same platform that powers the agent