I appreciate the theory behind closed system winching, but I don't really think anybody's system is truly "closed". You've always got connection points, and until very recently with the advent of soft shackles, those connection points were metal. The thing I never understood about the Factor 55 and similar thimbles / flat links was that you were removing a hook from the end of a winch line, but you replaced it with two potential failure points, the thimble and the bow shackle going into the thimble. Then you start adding other stuff in the mix, like snatch blocks with another bow shackle, and it seems like you're never really achieving the goal of a true closed system. In my mind, having a hook on the end of the rope almost makes more sense because it becomes infinitely more functional and in most cases you can use just the hook to recover from - meaning you just have one potential point of failure in the system.
I do need to invest in a couple soft shackles though as they do seem significantly safer than the bow shackles. Until like 2 days ago, I didn't even realize that winch rings were a thing, I just happened to stumble across those recently and they seem like a safer and easier to store alternative to snatch blocks.