Imgur seems to believe that this image is 18+ (though it appears to not be).

Done.

@Wander A more quality (but more labor intensive) solution would be to have an account setting that toggles a short CSS file containing overriding CSS for the adult image blur. This way, users could choose to have or not have that blur regardless of which theme they chose (without having to have two separate copies of each main CSS theme to achieve that).

Peertube might be an option; it's basically an ActivityPub server that's intended for video and stream hosting, by my understanding.