It's very common to see the particular syntactic structure of restating a point in the following general manner from Claude/ChatGPT in my experience and that of others:
"It's not X -- it's Y." or "This isn't just X -- It's actually Y."
Usually with an emdash there as well for the separation. As I said it's very plausibly becoming more common among people not using LLM-assisted writing too, just from seeing the stylistic approach used more often and having it spread naturally, but I do have been seeing it spread with dramatic speed over the last couple years. I even catch myself using other phrasing more often from reading it more. I think it's just part of how language spreads, honestly.
"It's not X -- it's Y." or "This isn't just X -- It's actually Y."
Usually with an emdash there as well for the separation. As I said it's very plausibly becoming more common among people not using LLM-assisted writing too, just from seeing the stylistic approach used more often and having it spread naturally, but I do have been seeing it spread with dramatic speed over the last couple years. I even catch myself using other phrasing more often from reading it more. I think it's just part of how language spreads, honestly.