Eh with a planetary cluster of that scale they have little choice. And Proc Gen is also in Bethesdas history, its how they built Arena and Daggerfall IIRC.
My issue isnt that you can see the same base on every planet, my issue is largely that when you have reached a sufficiently high level, most planets will be absolutely plastered with pirate bases. The universe goes from empty to full of RNG pirates and mercenaries so damn quickly. They really needed to create more unique encounters, but less of each kind, and spread them out a lot further.