YouTube Mistakes That Can Get Your Account Deleted

Google has stopped using tags as keywords in their search algorithm for a while now. Basically tags are useless, so I don't think they will ban you for the tag stuffing - but have no proof. It makes sense since YouTube/Google doesn't need you to tell what the video is about...they analyze it themselves.

One guy did experiments to show how tag are no longer used: https://www.socialvideoplaza.com/en/articles/youtube-tags