Yes, because of play services. Eventually the world would adapt, but the immediate effect is that nearly every major commercial app that is increasingly requiring play integrity, play services will stop working. Push notifications will also break, as will the payment network. Google Pay, Apple Pay, Samsung Pay etc are essentially shadow banks now.
The real impact of Google going dark though is less Android and more ads. Google fails, the revenue pipeline for 2 million + websites goes to zero overnight, and millions of digial businesses and agencies will go bankrupt within weeks. It would completely collapse the business model of the modern internet.
And you did not notice how many things require Google Apps/Play Integrity? Heck, most people don't even know how to install apps without the Play Store.
The real impact of Google going dark though is less Android and more ads. Google fails, the revenue pipeline for 2 million + websites goes to zero overnight, and millions of digial businesses and agencies will go bankrupt within weeks. It would completely collapse the business model of the modern internet.