Scraping implies not API - they're accessing the site as a user agent. And whitelisting access to the actual web pages isn't a tenable option for many websites.

Scraping implies not API - they're accessing the site as a user agent. And whitelisting access to the actual web pages isn't a tenable option for many websites. Humans generally hate being forced to sign up for an account before they can see this page that they found in a Google search.