You assume nobody can tell which of your posts you wrote and which one a model wrote for you. There is one sentence pattern that gives it away in the opening paragraph, and consumers already told a survey that the whole industry sounds the same.
The piece opens on an AI music app producing a near-perfect copy of a Chuck Berry song, then turns the same point on real estate marketing. Its word for what heavy AI use produces is blandfill — output that is not yours but the collected voice of everything, averaged into something competent, familiar and soulless.
There is consumer research underneath it. The firm asked a sample of 1,000 consumers who had recently bought or sold a home why they ignore agent marketing, and the top answer was that the industry all looks and sounds alike. A vice president at a large real estate company put it to the writer in an email: "Feels like the whole industry caught a virus of sameness and can't shake it."
Then the specific tell. Describing a newsletter that arrived in his inbox, he writes that the machine fingerprint leapt from the first paragraph in that sickeningly familiar "not this, not that, definitely not this, but this" framing. It instantly screams that AI wrote it, and you feel the absence of the person supposedly speaking to you.
He makes the point with a birthday card written in that voice — turning nine is not about cake, it is not about candles, it is definitely not about presents — and the line underneath it lands: nobody uses AI to talk to the people they love.
“not this, not that, definitely not this, but this”
The cost is not that a reader thinks less of you for using a tool. It is that the pattern reads as nobody being home, so the message arrives with no person attached and gets deleted with everything else that sounded like it that week.
It is a cheap fix. Search your last month of posts, emails and listing descriptions for that construction and cut it. Then say the thing plainly, in one sentence, with a detail only you would know — the street, the neighbor, the thing the seller said in the kitchen.