That’s not the right word. “Hoarding” is saving everything and never using it. “Prepping” is keeping enough to last through whatever disaster be it war, a pandemic, a job loss, an illness, etc. I “keep the pantry full”.
Who wouldn’t eventually use the last square of tp? Haven’t seen an expiration date on tp. Flour, corn meal, masa, salt, baking soda and sugar will last forever, if stored properly. Baking powder is supposed to expire but I’ve used some that’s well past the date that worked fine.
Baking powder keeps indefinitely in the freezer, so I hear.