... oh, wait. ;-)
But seriously, I think there is probably no fundamental shortage of the ability to make more TP. When you drive through northern Wisconsin, you will see huge stacks of wood all over the place.
No one is going to build a whole new paper mill to cover for a 100-year event. TP is about the best example for inelastic supply and inelastic demand.
That's why it's so weird to me that people are buying so much. How long do people expect this to last? I'm guessing it'll be resolved within a couple months in most places, so what's the point in buying >6 months worth of TP?
Honestly, I think everyone with means should have 1-2 months of basic necessities on hand in case of emergencies (job loss, natural disaster, etc), especially for shelf-stable stuff like TP and soap. However, the time to stock up isn't when an emergency happens, but after an emergency happens (presumably your stock is a bit low).
One roll per week? That seems frugal.
180 pieces per roll x 36 rolls is 6480 pieces of toilet paper. (Guessing the 180, fairly standard-ish here in Australia).
Divide that by days in half a year 6480 / 182 = 35 pieces per day divided by 4 family members in the house is 9 pieces of toilet paper each per day.
(not wasteful) != frugal
In any case, using a lot of TP might be unfortunate, but it's hardly a sin.