Walmart
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Walmart has an ‘interesting’ feature when you use their app on both the iPhone and iPad. A sizable (90%) of the screen popup with a very large button to one-click signup for Walmart+ with a small ‘x’ in the corner to close the popup and continue to the app proper.
Not specifically about Walmart but Louis created a Wiki page and released a YouTube video titled “The death of click to cancel & what we can do about it: CAT disapproves”