My point is that you should not excuse big corporations for clearly overstepping their bounds when it comes to moderation (as in “minority report” style moderation).
For Google, it would probably be even cheaper to only check URLs in collections that were shared with anybody, at a point the owner attempts to share them. Instead, they preemptively hide them from you, because “this set of characters offends us”.
This is something people should be angry about, not find an excuse for.
Open the link and read the thread, the author is not aware of this “collection” being shared publicly.