And the fact that he has to guess at what the problem may or may not be is the core of the issue here. A simple straightforward response clearly indicating why the content is removed is not so far-fetched an idea.
MKBHD made a video today that properly highlights this kind of issue: https://www.youtube.com/watch?v=1Cw-vODp-8Y
The only scaling issue my amateur brain can fathom is the manner in which the information is provided (data in a database then shown in a user interface, email notification, etc). And it's Google -- experts in AI, ML, data, and automation. Scaling sounds like an excuse, not a reason.