Confusion about what? If your goal is to know which design people prefer (independently of generation), there is a necessary amount of confusion required with r

Confusion about what? If your goal is to know which design people prefer (independently of generation), there is a necessary amount of confusion required with regard to which is new and which is old. Even if you were to remove the labels, users familiar with the platform will still be biased. There is something called the mere-exposure effect, which dictates that the mere exposure to a thing will cause preference toward said thing. Because of this aspect of human preference, the deck is naturally stacked against "new" things.