Believe it or not, after a few hours in a small container it will get pretty darn close to the % on the pack. So if you have a slowly curing flower in there, close to the right humidity to start with, in a sealed or environment, it is going to adjust the remaining ‘air’ to 62%.
So to check the actual rH of the buds, just remove the pack for a few hours to be sure - then toss the pack back in. The readings aren’t ‘false’ they are just reading exactly what the packs are adjusting the environment too, so you are measuring that, not the buds.
Cool. I just know that the 62% is for weed, and they have a lower one that is also popular in the high 50’s rH. they probably have others as well, just never looked.
I like a cigar with my whiskey, but not an aficionado. I like the Drew Estates ‘Acid’ cigars.