AI generates prototypes, features, and working code faster than UX teams can evaluate them. Nielsen Norman Group calls this the custodial era of UX: a shift where designers arrive after the artifact already exists, not before.
The core problem is sequencing. Teams move from idea to plausible-looking product through vibe coding and AI generation, skipping foundational questions about user behavior and whether features should exist at all. The result is UX debt, and it accumulates quietly in production. The article is worth reading in full because it does not just name the problem. It outlines how UX adapts: building shared judgment across teams, accelerating evaluation methods, and developing new skills for guiding AI-generated designs rather than originating them from scratch.
The trajectory here is structural, not cyclical. UX is not losing influence to AI. It is being repositioned as quality control for a much faster production line. What comes next, according to NNG, is UX defining what that control actually looks like before organizations decide they do not need it.
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