I got curious. This is how to set up what he is doing:
Here is what he is using the equipment for:
He has a significant load on that line to get it flat. I'll let somebody else find the chart about how that tight line multiplies the force because of the hang angle. The fellow in the video complaining about the rings is not using them for climbing as they are intended for. I'm mildly surprised any other parts of his setup are holding up.
I'm sorry if this seems like a rant but his video is a complaint about a situation where the equipment is not being used as intended let alone as we use it.