Google don't remove things for copyright reasons based on an automatic "hunch".
Yes they do. There was a big incident last week. Japanese TV producer Toei launched a globally available Youtube channel for subtitled tokusatsu shows. Youtube automatically issued copyright strikes saying it was Toei's copyright, resulting in the channel getting terminated by mistake. But the uploader was the copyright owner! Within a few hours, it was restored. So yes, they do remove things for copyright reasons without any human input, on, as you say, an automatic hunch.
It's far more likely that Toei (or their lawyers) had already entered their content into the Google Content ID system, so when they uploaded it, it was automatically taken down. This isn't Google doing it off their own backs, it's Google doing what they're told to do.
There's plenty of examples of Content ID getting the wrong information entered, especially when broadcasters use original content from YouTube and upload it as part of a programme or segment, and then claim the original as their content, taking the original offline. Again, this isn't because Google are being annoying, on the whim of some AI algorithm deciding to take it offline, it's because lawyers and rights agencies are claiming the wrong stuff.
I would say in this case, it's unlikely to be Content ID as usually it applies almost immediately after the video has been uploaded, rarely do waves of similar claims happen and usually it's those audio MCN's like AdRev and Orchard acting on behalf of the claimant (which would be displayed in place of the actual claimants name on YouTube's watch page).
If it was after the fact, usually every video matching would be disabled at that point. Usually the footprint would be generic enough that i would expect most Millionaire uploads to have been removed by now, but there's still plenty of other Millionaire content on YouTube, including smaller channels which also have uploaded the said video clip. Indeed, after the previous clip I found got disabled, I found another channel which had the same video and which hasn't been disabled (yet).
Chances are, it's manual claims being sent by Celador, but all these uploaders would need to actually upload the said video to their own channels and see what type of claim comes in (automated or manual).
Last edited by SuperSajuuk on 12 April 2020 7:17pm - 3 times in total