Yes, I’ve realized so much 
I’ve still not found any clear answer to this though: Can I use the Expire binding on things/items created using UI? I’ve chosen the “new” way, ie all my things and items are created using PaperUI/Habmin…
I don’t know but the answer is probably not.
Personally I think the PapwrUI way of managing Items is not yet complete and therefore can’t recommend it as the only only way to create and manage Items yet for this and other reasons.