Numerator's April 2026 consumer study put a number on something brand teams have been talking around for a year. Among non-users of AI, 57% of Gen Z said they actively reject the technology, against 32% of Boomers.
The generation most brands have been treating as the AI-native default contains the market's largest pocket of refusers.
The age cell is doing less work than it used to
Generational targeting has always been a rough proxy. It worked because the alternatives were worse and because cohort behaviour, on the things brands care about, was reasonably consistent inside the cell. AI attitudes have broken that consistency, and they have broken it most visibly in the place brands care about most, which is shopping.
Numerator's read of the shopping journey shows Gen X using AI as practical utility. They are not evangelists and they are not refusers. They are users with a job to do. Gen Z, by contrast, splits. A meaningful share leans in. More than half of the non-user segment has decided they want nothing to do with it.
For a brand planning a 2026 launch, this matters at the product level, not only the media level. The Gen Z shopper a brand is designing the AI-assisted experience for is two different people. One wants the assistant, the comparison, the generative summary. The other will close the chat window, ignore the AI overview, and resent being routed through it on the way to a checkout button. Building one experience for "Gen Z" is now a design error.
Ipsos's 2026 AI Monitor, run across 32 countries, sharpens the point. It found 68% of Gen Z workers and 57% of Gen X workers said AI had saved them time in the last twelve months. The gap is real but narrow. It does not justify the size of the brand bet most categories are making on Gen Z as the AI-friendly audience and Gen X as the laggard.
Posture is the variable, not age
The more useful cut for a brand is posture. Refusers, pragmatists, enthusiasts. These are observable from behaviour signals that brands and their retail partners already collect. Whether a shopper uses an AI summary on a product page. Whether they accept a chat assistant or close it. Whether they engage with generative search results or scroll past to the standard links.
None of this requires a new identity graph. It requires the brand to ask for the signal and to build the product experience and the creative against it. The same product story can be told with an AI-assisted comparison for the pragmatist and with a human-voiced editorial treatment for the refuser. Both are honest. Neither is a workaround.
The brand decision underneath this is whether AI in the shopping journey is presented as a default or as an option. A brand that defaults the AI assistant on, with the refuser obliged to dismiss it, will lose the refuser at the moment of attention. A brand that offers the assistant as a clearly signposted choice will keep both audiences inside the same funnel.
What this means for the shopping funnel a brand owns
The Numerator data is specifically about shopping, and that is where the brand consequence lives. AI in the path to purchase is no longer a novelty layer. It is the summary at the top of a search result, the comparison inside a retail app, the assistant in a brand's own commerce surface. A refuser is not someone who dislikes a brand's AI ad. A refuser is someone routing around the AI surfaces the brand has invested in.
That has two consequences for how a brand spends.
First, the brand's owned experience needs an AI-optional pathway, not an AI-first default. The pragmatist Gen X shopper Numerator describes will use the tool when it helps. The Gen Z refuser will leave when it is forced. Building both routes is cheaper than losing the half of the audience that the analytics deck has already counted as reached.
Second, the brand's media mix needs to be read against posture, not just reach. A retail media buy weighted toward AI-surfaced placements will under-deliver against the Gen Z refuser segment regardless of how big the audience looks on paper. The impressions exist. The attention does not. The brands that treat their retail partners as posture-signal providers, not just inventory providers, will recover the waste.
The planning shift brands should make now
The instinct to read Gen Z as the AI-friendly cohort and Gen X as the cautious one is a 2023 instinct. The 2026 data, from Numerator on shopping and from Ipsos on workplace use, says the cohorts overlap more than they diverge on the median, and that Gen Z carries the larger tail of active refusal. The age cell is no longer a good predictor of how a shopper will receive an AI-assisted product page or an AI-assisted ad.
The concrete move for a brand is to stop building AI-first defaults into the shopping experience and start building AI-optional pathways with posture-aware creative behind them. That means a product page that offers the AI summary rather than imposing it. A chat assistant that announces itself and waits to be invited. A creative variant set that includes a human-voiced version for the refuser, not as a fallback, but as a peer.
The work is not glamorous. It is asking retailers and platforms for the posture signal, building the variant experience to match, and accepting that the audience taxonomy on the brand deck is older than the behaviour it is meant to describe. Brands that keep buying age will keep paying to annoy the half of Gen Z that has decided AI is not for them. Brands that start designing for posture will hold both audiences inside the same purchase.
One team, one mission, every impression accounted for.