IMHO the fix is to read more books. Obviously I mean human-written books, and specifically with prose that you appreciate.
After a hiatus of a few years, when the internet had me, I've gone back to prioritising reading books once more. It's not only great for my writing, it's also just good for the soul. And it's the absolute antithesis of the infinite scroll.
The great poems, plays, novels, stories teach us how to go on living, even when submerged under forty fathoms of bother and distress. If you live ninety years you will be a battered survivor. Your own mistakes, accidents, failures at otherness beat you down. Rise up at dawn and read something that matters as soon as you can."
-- Harold Bloom
It's quite different than just reading a lot of text from other authors and passively absorbing diction and style. Instead, it means getting detailed reinforcement signals in the context of your own active writing effort.
This can start an ironic reinforcement learning pattern where the writer gets tuned to write in the LLM's "corrected" form. Imagine a traditional professional writer, in a long-term partnership with a particular copy editor who gates their output.