Cosmic, you hit the nail on the head, as usual. I expect to live at least another 50 years, which means my cellaring goals are very different from someone in middle age or older. But I'm not particularly interested in cellaring 50+ years' worth of tobacco. I store bulk blends and Esoterica bags in mason jars, and leave sealed tins alone. If, one dark day, I run out of tobacco to smoke, I'll mourn. But trying to plan for 50 year storage on blends is far beyond what any manufacturer ever had in mind.
After reading this thread, I actually checked my jars of Opening Night, and was terrified to find some white matter on one jar. But actually, t turns out it was just a smudge on the outside of the jar that I could wipe off on my shirt. Whew.