It is possible to become a better writer alongside the AI
I publish many AI-assisted fanfics on AO3 (I always declare AI in tag and summary)
A long-term reader made my day when he praised my latest fic, saying my writing has improved a lot
I am not oblivious; I know that I am now better at prompting and guiding AI. However, I also do a massive amount of rewriting, to the point where a single chapter update can take 2 weeks or more
All in all, this tells me that I am on the right path
To the rest of you: keep writing; don't let antis define you what you are