The question is a god one! And something that we often forget as potentially an important component in our getting the best outcome for our cooking.
We know that we must keep meats cold ( under 40F according to USDA guidelines ) in order to slow the growth of potential bacteria. So, we refrigerate our meats after prepping them. But, refrigeration extracts moisture from the air it is chilling - thus expediting evaporation from the surface of exposed meats.
So, part of the need to wrap is to keep moisture in place. And - while placing said piece of meat in a container will conserve moisture - it still allows for some surface oxidation of the meat's surface which can potential change the flavor of what you have worked to produce.
So, let's add this as some parallel/comparative methods and their similarities/differences:
When you want to marinade - whether it is via a dry or wet application - you are trying to get flavors into the meat. If the meat is immersed in a "brining" solution ( one which has a salt solution with a content higher in salt than in the meat in it's natural state - thus producing the osmosis we desire - a chemistry based "over-pressure" by the salt in the brine - causing the solutions in the meat to exchange it's internal fluids with the brine surround it to "equalize" with those surrounding it ) . This effect can be accelerated, and made even more efficient when does under vacuum. ( Google "vacuum marinade machines" ).
Open air dry brining under refrigeration is popular this time of year - for turkey. We all like the skin of the bird to have an edible texture. The skin contains a good amount fats and water. So, when we rub seasonings including salts into the skin of the bird - we are helping to draw that moisture to the surface - which accelerates evaporation under refrigeration to assist in drying the skin.
Just be aware that if you have other pungent items in your fridge while dry brining - your protein that is being dry brined can adsorb some of those odors. Ideally, scan your fridge first and remove or seal up strong onions, etc.
Which of several methods, including vacuum sealing, wrapping, immersion in a container or open air dry brining is right or you? It all depends on the objective and the time that you have to plan and invest in the cook.
