I'm forking a new thread off of this one which had wondered thru many topics
I can understand wanting to go lighter than the rope that Philont provides (5/16" nylon, IIRC) and have no quibble with that.
But the bags? … They provide woven plastic bags with a weave reminiscent of burlap. They'd certainly be heavy by solo UL standards but they are not heavy for group use.
If a crew has addressed the big three items, kitchen items and their personal gear choices they won't be able to notice the difference between Philmont bags and mythical zero gram bear bags in their pack.