No, what is considered "fanservice" by others is simply how the plot was made

Time travel bringing back dead characters is fanservice, but bringing back Nobody's original selves is just how the lore works

The Nobody's original selves coming back is fanservice, but time travel bringing back dead characters is just a plot device Nomura

No, Nomura is only bringing back what/who HE wants. Nomura-service.

Yes (other)