>>35632126G/S were sequels of R/B so having neo-rocket makes sense, esspecialy when you consider there was probably Rocket operations in johto during the events of R/B.
Rainbow Rocket was relevant since it was wrapping up a plot point thats been teased for a long time, that there are multiple timelines and in some of them the villians succeed. Besides in that one all the baddies came back not just Giovanni so every team minus gen 7 has been brought back at least once.
