Claude users complain that AI writing is getting harder to use

Claude is producing text that feels compact but hard to read in real work. The recurring problem is that it creates dense sentences, made-up compound terms, fresh metaphors, and undefined ideas, then puts them into specs and plans. That makes the output look polished while forcing the reader to slow down and decode what it actually means.

Similar complaints appear around Opus 4.8, where the writing feels more flashy and heavy than earlier models, with sentences that need several reads before they become clear. The same frustration also appears with ChatGPT, so this looks like a wider AI writing-control problem, not only a Claude issue. Solo founders and makers are also struggling to make AI match their own writing voice, even after using a voice.md file with rules such as avoiding em dashes or ending emails in a specific way.

Repeated phrases are another symptom: in one long research session, Claude reused the same expression 25 times, showing how quickly model habits can take over a long output.