I'm starting to feel kinda old and out of the loop. Could someone please explain the conversational style of this post?

It begins with a prompt directed at Gemini, followed by what appears to be an AI-generated response. Are these actual AI responses or is the developer writing their parting message in a whimsical way? I'm genuinely confused. Help much appreciated!

This is a post framed in medias res, from the perspective of the developer, as portrayed by themselves, asking an LLM to construct the post that they post immediately afterwards.

I'm unsure if the post is actually created by Gemini or the developer's imitation. I suspect the latter.

He posted a conversation with Gemini, including his real posts and then Gemini's responses.

It's something of a satire, although presumably actually comes from a "conversation" with Gemini (because who would bother writing a bot's verbose and uninsightful responses like that?)