Hi
@twalker H260. I think you are asking about the statement that the line would attach to the mast.
The discussion has been first about
@riversloth's issue "multiple lines" that exit the mast near near the head of Furler. He does not want to have the extra halyards there, so he is considering removing the extra halyards that would be used for a second head sail like a gennaker or asymmetrical sail. I suggested he tie a stop knot in the end of the halyard and draw it up against the mast. That way, if later in life he decides he wants to add an additional head sail, he would have a messenger line and would not need to fish a halyard down the mast.
Your comment about safety and cockpit run lines is a good one. Yet, it is not the only way to safely manage a sail boat sailing solo.
There are issues with moving about a boat in weather. A solo sailor needs to weigh the risks and rewards of such actions.
I choose to have my halyards at the mast for several reasons.
I grew up managing sails at the mast. When I move about the boat I check my boat for loose gear and issues that I can not see while in the cockpit. I move about the boat using jacklines. These help me feel safe in my movement. I always use one hand on the boat. It is an engrained natural action for me. I have set my rigging up so that I can do nearly all of my sail trimming from the port side of the mast. Without the added lines to the cockpit and all of the turning blocks my halyards raise and lower the sail smoothly. I do not have a lot of lines running along the decks that I might trip on or roll an ankle. This makes deck movement safer.
I think each sailor should examine all the options and make decisions that best serve their way of sailing the boat.