Gen Z backlash: 72% acted against AI-made marketing

Brands chasing Gen Z are spending to reach the audience most resistant to AI-made ads, according to survey reporting published on October 30, 2026. eMarketer reports that 72 percent of Gen Z consumers in North America have taken some action against a brand because of its AI-made marketing.

For a creator or a small brand, that number sits on a single decision: whether to put a generated face or voice on a product. The same reporting says the objection is narrower than AI as a whole, which is where the practical guidance starts.

The report traces the 72 percent figure to a July 2026 Rival Technologies survey of 901 Gen Z consumers aged 18 to 29 across the United States and Canada. eMarketer's methodology box puts the sample at 466 respondents from the United States and 435 from Canada, drawn from Rival Technologies' own panels, with an 87 percent completion rate.

Two more surveys in the same report point in specific directions, and each measures something different. Bentley University and Gallup found that 73 percent of Gen Z adults say it is unacceptable for brands to use AI to create people or voices in advertising, while only 31 percent object to using it for brainstorming and early drafts. A separate Talker Research study for Auros found that 44 percent of US adults go out of their way to shop with brands that do not use AI in their marketing. Different audiences, different questions and different dates mean the three do not settle the question between them.

October 2026 supplied specific cases. Coca-Cola's Fanta made its Haunted Universe Halloween campaign with the AI studio GRAiL and expanded it across 50 markets, and designrefs reports that online comments were overwhelmingly hostile, many calling the trailer AI slop. Consumer research by Zappi, cited by designrefs, found something else: 85 percent of respondents called the Halloween products distinct, against a 71 percent norm. NJ.com reports that a New Jersey brewery, Swedesboro Brewing, launched an AI brand ambassador named Sarah on October 14, drew hundreds of critical comments across Instagram, Facebook and Reddit, and pulled her after a follow-up video made the reaction worse; founder Marvin Bowe III told NJ.com the videos drew more than 200,000 views and engagement above anything the brewery had seen. He told The Philadelphia Inquirer a lower count, about 175,000 views and a 2,420 percent lift in engagement. Third Sector reports that the National Trust, a UK conservation charity, paused all of its TikTok ads while it investigated how TikTok's automated ad feature produced AI-generated creative that was not part of its approved campaign.

Comment sections and purchase intent can point in opposite directions, and no comment section shows that a campaign failed commercially. The survey figures are the firmer ground, and they mark where audiences still tolerate AI and where they do not.

If you are about to ship an AI-made ad, the Bentley-Gallup split is the working map: keep the tool for brainstorming and early drafts, and hold the generated people and voices.