No, it's not necessarily a plot hole. The show's history doesn't have to exactly match the show's 20th century background. (For example, Strife is still around in the 20th c. Hercverse, even though he died in the show.)

This phone feels like a bargain, but it doesn’t feel like a bargain: the build quality is rock solid, combining plastic and metal to surprisingly cool effect. Yes, it is definitely gamery, but I don’t find it to be ostentatiously so, and honestly I dig the black and green color scheme — particularly the shiny green chamfers.

He hated any sort of dikk — that is, unnecessary trouble or fuss — and he never bothered his head about accounts.

The classic modern android was the high-fashion model of the Fifties to Seventies, with her haughty masklike face.