My bad for being a bit too vague on the OP. What they meant with Hacking is stuff like "Showing users how to bypass secure computer systems or steal user credentials and personal data."
Good riddance? Maybe, but it could also affect videos that teaches homebrewing and explaining how exploits work.
But the cybersecurity community isn't happy about thie at all, imagine trying to explain an patched exploit only to have it taken down. Maybe a video about Reverse Engineering WannaCry, or heck even an historical virus. I'm at least hoping that Danooct1 doesn't get in trouble over it.