Show HN submissions tripled and are now mostly vibe-coded

Adrian Krebs scored 500 recent Show HN landing pages and says submissions have tripled, with 67% of pages triggering at least 2 AI design patterns. The method used Playwright plus an in-page script to check DOM and computed styles across 15 deterministic CSS/DOM signals; manual QA found about 5% to 10% false positives. The real signal is not model quality, but fast homogenization from AI default frontend templates.

Why it matters: This clears HKR-H/K/R: a sharp hook, a concrete 500-page method, and a real nerve for AI builders. I keep it at 78, not higher, because it is a single-author experiment rather than a product launch or a cross-source industry event.