You are right, this is scraping. But I argue it is manual scraping - the data gets transferred even in the case of a regular user, just not saved.

As far as I interpret it, only automated scraping is against the ToS:

https://www.facebook.com/apps/site_scraping_tos_terms.php

> You may not access or collect data from our Products using automated means (without our prior permission) or attempt to access data you do not have permission to access.

https://www.facebook.com/legal/terms/update