Moved to the copyright / legal forum.
[DOUBLEPOST=1492108747][/DOUBLEPOST]If they're putting your channel name in the tags, you could flag their video for misleading metadata:
Don't use misleading metadata
Do not include metadata in your video that is not directly related to your video. It may be tempting to use popular terms or names in the description or tags to increase views, but if your metadata includes names or words unrelated to your video, you may receive a strike and your video will be removed.
Example: If you make a video about baking a cake and your video is not at all related to a popular singer, you should not include that popular singer’s name in your tags or description. Doing so may cause your video to be removed and given a strike if it is flagged.
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