Has this been confirmed one way or the other?
It's irrelevant when your Vault is new, but it becomes quickly unmanageable. Your dwellers can literally die in Survival mode while you scroll through your equipment lists just to give one dweller something that starts with a "high" letter. Wasteland Gear will kill you for sure.
And thanks to Sell X objectives*, we have to keep all that stuff on hand.
* And, you know, needing that stuff to equip our Dwellers.