You’re going to get varying info and only years of experience will show you what is right for you. I travel with little Ball glass jars, I have 40-50 of them, many over a decade housing baccy that is still perfect and not dried out. Personally, I think that article is bonkers. If you’re talking rehydrating, that’s a different story.
When I’m traveling with aros or McC virginias, I just put an ounce in a good tobacco pouch and it stays perfectly moist for weeks.
My 2 cents

, best of luck and enjoy your bowls on the road sir!