Been a user 3 years ago. I really haven't seen an improvement. Rather, the prose quality is now becoming even more clearly AI
3 to 4 years ago chat gpt2 wrote much more creative stories, its faults actually made
interesting and absurd concoctions out of it's training material. Nowadays its just a machine for plagiarizing works and laundering copyright.
As if artists and writers don't deliberately plagiarize works and combine them to make something new.