Hey, @Chris1048, I think I have a workaround. Same sort of place here - and I hear you about the campfires! I have adapted a National Forest Service list of guidelines to hang on the treehouse wall. It encourages frugal use of the firewood. Even so, we get the odd guest who, I swear, builds a funeral pyre.
Anyway, regarding linens: Our guests bring their own sleeping bags, but I do provide pillows. So that's a little linen right there, and I have made two backup sleeping bag liners. Haven't needed them yet, but if a guest points to my forced amenities and asks for sheets, he will be handed a liner. That was a suggestion by another host here in the forum when word first came down that linens and towels would be mandatory.
As to towels, many guests bring their own, since they are hikers, and hikers do that, but I have towels for those who ask.
So I think you and I can keep doing what we are doing and what works for our places as long as we have backups in place for the sort of demanding guests we don't really want anyway...