I think it’s neat when someone finds a new use for a common product, especially when it involves lightweight backpacking gear.
For example, someone discovered a long time ago that a cheap grease pot sold at Wal-Mart for about $5.00 makes a pretty good backpacking cook pot.
Some ideas are better in theory than in practice. Some are just silly.
I wouldn’t expect it work for hanging a bear bag, but there are a lot of uses for which it could work.