Packaging clarity is a signal of its own
A well-made product tells you the serving size, the amount per serving, the storage conditions, and the registration details in readable type. If any of those are missing, or printed in tiny grey text on the underside of a fold, that is information about how the product is presented, and presentation is a choice a serious brand makes on purpose.
Clarity is cheap to provide. When a pack spends its design budget on the front and none on the back, you can assume the same priorities run through the rest of the business. Packaging is also where you find out what format you bought: capsules, tablets, gummies, softgels, and powders each have different storage sensitivities, and the pack should say which one you are holding.