Also worth pointing out for those looking to re-create the video- A ball is not 3/4npt thread. You can see hers looks to be loose towards the end of the video.

Will it work, probably. could the pipe fitting crack and send you and your hammock to the ground- on top of metal parts? probably.

It would be something to test out for strength before committing, you know, like Elon did with that steel ball )