In a March 2023 interview with the game's director Stig Asmussen published in PLAY magazine, he explained why the game didn't appear on the last-gen PlayStation 4 and Xbox One consoles:
"Jedi: Fallen Order was a fantastic upgrade that really brought the game into its own. “[That version] was a good proving ground while we were considering how to enhance Survivor…We actually considered ray tracing for the new-gen Fallen Order because we were already building it into Survivor, but we ultimately scrapped it, because the environment art authoring between the generations was pretty different. But the process did help us define how we wanted to approach ray tracing on our modified version of the Unreal 4 engine."
"You’ll experience the benefit of the more powerful hardware throughout Survivor. Bottom line, we learned quickly that we could take advantage of the faster processors, larger/faster memory, better loading times, etc, to create much larger maps, with more detail, greater density, broader enemy/NPC variety, and overall fidelity. These features aligned perfectly with how we wanted to push the game. We didn’t want to break what we did in the first game because it was well received, but we wanted to evolve/enhance the experience. This new generation allowed us to do exactly that, and I believe it translates to a true new-gen experience in the Star Wars universe."