Of course language is going to be different in 100 years, but the entire language isn't going to be shaken up to such a ridiculous degree.
Here's some dialogue written 87 years ago using thick 1920s slang. This is PI Sam Spade (Bogart), whose partner had just been murdered, talking to two police detectives, one of whom makes it clear he suspects Sam.
There's a lot of terms no longer in use here, but the connective language is straightforward enough that you can guess the slang's meaning from context, despite being nearly 100 years old. Not like Crossed +100 where literally every other word is some overly indulgent substitution.
Hell, Shakespearean English is multiple centuries old yet easier to understand than Crossed and that was supposed to be stylized back in Elizabethan times!