Why do you think that? The window for any ephemeral node is four Eorzean hours per Eorzean day. To get one to spawn, you have to clear out two patches of nodes which eats into the window. The material that can be reduced into this amount of clusters appears uncommonly: like, 1 in 5. If they were going to fix something related to this, it would be the trick that allows you to save time on the node respawn which would be deserved, but there's zero reason for them to fix the reduction yield itself.