good to know they're turtling around the big players, you'll likely be banned for doing it again or linking to material that discusses it
You can test their capabilities by linking to an OC infographic discussing cooper/vanderbilt. A human response will be slower and a bot wouldn't have the OC in its' crawler of bannable content. If it's instantaneous or within the hour, they've either dedicated human eyes to your account or their bot is self-updating and reads everyone's images.