Many great SQL examples have long existed on stackoverflow and similar sources, but until the recent past were buried by lower quality questions and answers or SEO spam.

You will find that if you check sources they are lifted almost verbatim. LLMs are a way to cut through the noise, but they are rarely "authoring" anything here.

It's wild how far a little marketing can go to sell the same or an arguably worse product that used to be free and less unethical.