Yeah they did. My reading of the policy is that YouTube does not allow content that shows off legally dubious (or outright banned in any state) accessories, and does not allow firearms in live streams (because shit can and often does go wrong, and live censoring isn’t really a thing). Teaching firearm safety is still very much allowed.
There are some commercial rolls I’ve seen in the US that seem to be a happy medium…the holder itself in the stall has a thin plastic rod for the TP to go on, and the rolls have a very small opening in the center (and no cardboard) to go on that rod.