You gain no reduction in volume or weight, and no increase in usable screen real estate.
Isn’t that just how folding works? You trade off dimensions… a double thick square is much easier for my small hands to grab and stuff in my pocket, compared to a long rectangle
If one password is leaked, it should let you change the key for just that one service. Eventually, you could have a bunch of different keys for different service. But then you will need some manager for remembering all those different secrets. Yay!
I see they have a counter that maybe you can set? Then I guess you just need a manager to store the counters, which seems fundamentally the same