No it doesn't. Time still flows linearly. It's just bad writing.
Probably by AI
That's just being pedantic for the sake of pedantry. "Era" can refer to just about any period of time longer than a year or so. With fast-moving technology two years ago can feel like prehistory.
No it really doesn't though. Yes, it is pendantic on me but its still bad writing. 2 years is too little to be called an "era" no matter what the context is. If this is okay, lets start calling 1950s prehistoric then