There&#x27;s an alternative that is more user-friendly which the browser provides, but only for app install interstitials. Since there&#x27;s no built-in alternative for other kinds of interstitials, it makes sense that they&#x27;re left alone (although the crappier your site, the less time people spend on it, and presumably the farther it falls down the search results).<p>Also, the blog post states they&#x27;re essentially calling these sites mobile-unfriendly, which I think is entirely fair. All full-page interstitials are annoying, on the mobile web or desktop web, but only &quot;install our app&quot; interstitials are unique to mobile. So if you view &quot;mobile friendly&quot; as meaning &quot;as good as desktop web&quot;, banning bad things that are only relevant to mobile makes sense.