“YouTube has declared the video too “graphic” for viewers and has demonetized it”
This is pretty standard practice at YT. Most of the right wing streamers have to be very careful about using euphemisms and not showing certain things (even if they are just showing content that lefties post and get away with), just to not give the YT censors any excuse to demonetize.
For example, Sydney Watson, when she talks about trans people grooming kids, she always refers to the kids as “puddin people” so as not to get demonetized. Just saying you are talking about child abuse is probably enough for them to say it’s too graphic.
I saw one guy who had "Youtube" every time he used a word they did not approve of.