Google randomly deleted a popular YouTube channel again

Seems like his whole channel is dedicated to 3D-printing firearms and has been regularly demonetized. Just to give some context.

Is the mention of the history of 3D printed firearms likely to be the issue, I vaguely remember those causing similar issues before. (Mandatory clarification: I don’t necessarily agree that that’s a good reason to shut an account, but Google may do)

Are we sure these are random deletions? What was the last popular channel that went through something similar?

Google did it again and randomly deleted a popular YouTubers channel with no notice and without contacting them I'm advance to discuss