The comment you're referring to is about the trebuchet that the commenter built ...

		InitialLastName on Dec 2, 2021 \| parent \| context \| favorite \| on: Supersonic Trebuchet The comment you're referring to is about the trebuchet that the commenter built (not the subject of the article). The article itself is blogspam that adds effectively zero content to the video other than to capture some advertising traffic.