Also, the video was not tagged properly as NSFW, and it was another argument for taking it down. Nowadays, it's possible for the community to control tags, just login with dtube account and try the 'Vote and Tag' button next to the tags. This way, a video not marked as nsfw by the author, can still end up in the NSFW tag if enough people vote for it.

Arguably, with the same video today, I'd do just that to make sure it's hidden for people who have NSFW disabled in settings, and I wouldn't be blocking the video link nor deleting the file.