Pioneer 3 is probably what was upgraded in the Oracle Mothership and PSO2 Meseta for sale allowed it to salvage the rest of the civilization that the Pioneer ships were meant to save. Given Luther's status, it suggests the photoners could be equivalent. Spoilers Dark Falz from PSO2 derive their power. The Dark Falz from Ragol was there for centuries.
One small hitch with that theory. We all know what happened in PSO to the original civilization. Wherein we learn that at some stage they created an AI to renew Coral's environment. This AI was eventually infected by D-Cells and went rogue and killed off 90 percent of culture. Those paying attention will recall that D-Cells, were the actual reason for the Pioneer project in the first place. D-Cells had forced it into Coral, via an asteroid or any such macguffin, and the government wanted to weaponize it.
They put together the Pioneer job to track down the original source of this D-Cells, and found Ragol. Going back to the point, PS0 occurs 100 years after culture gets nuked. Mother Trinity, the rogue AI, was presumably created around the time of these events of PSO or shortly after Episode III. For anybody who doesn't know already, Pioneer 2 flipped Coral the bird at the end of Episode III and colonized Ragol after the total and complete destruction of Dark Falz and Olga Flow following their duel to the death. That is just another narrative thing that runs contrary to PSO2.
I'll go through the rest of PSO2 narrative between Episode 3 and what's left of Episode 2. One last thing is the fact that it's possible... that they THOUGHT he had been destroyed. If this is true, it would result in being the proof that leads to the understanding that Dark Falz can't be destroyed. This knowledge of the resistance to complete devastation is immutable. So any Dark Falz being destroyed doesn't follow the exact same logic as presented in PSO2.
In short, it is likely that Dark Falz in PSO1 was just believed to be ruined despite"He is dead because we said so." His return and destruction of Pioneer two would alert the Oracle fleet. Subsequently, ARKS would build to conquer him. Then they'd then have the knowledge that Dark Falz can't be destroyed, only sealed. Thus leading to the event point 40 years ago when Dark Falz was sealed on Ragol/Naverius. In the event the Photoners that met with Xion and constructed Oracle were Pioneer 3 (as clarified in another thread ), it would actually still fall in line. The confirmation in terms of buy meseta pso2 time is that Dark Falz Elder has been sealed off.