Great video. OP's is something that many people can make and much faster, given the low tech of it, so I appreciate that too.

This French dude has been doing it for years. At least 2021.

As annacappa noted, this predates Colin Furze's (which was awesome and totally worth a watch), but it's a much simpler design than Furze's or movie wire walking. 'course, you can't go as high. But good for a small performance. And actually, I think comparing it to Furze's there's more potential for freedom of movement in various directions, although Furze did have that retraction mechanism in his arm, this one seems like it allows moving the entire piece around the room due to the simplicity of it.