Sorry miss read above on shorten/connecting. The video you posted does show a rolled up magazine between the two straps. I’d love to see a photo of the same with winch line.You are conflating issues. Line shortening vs. line connecting.
I know the science behind the shorter rope length on the winch drum. But I’m still sticking with full length based on my needs historically. Far more often I have not had enough verse wishing I was more layers down.
I can always shorten the main line off the winch.