All those pseudobulbs/stems will eventually die, but for some of my plants, it takes 2-3 years to finally get so unsightly that they need to be cut off. Even though the pseudobulbs only bloom once (but can have multiple flowers off a single pseudobulb), as long as that/those leaves are green, they are still producing chlorophyll and thus nourishing the plant. So they are not just taking up space, Anna.
