The exit is a feature

Most platforms are built so you cannot leave. Your posts, your followers, your history — all of it lives inside, and the door out is narrow on purpose.

I wanted the opposite. This site is just files I hold, published to a domain I hold.

If I want to go, there is nothing to export. The files are already mine.

That sounds like a small thing until you have lost a decade of writing to a service that shut down. An easy exit is not a sign you plan to leave. It is a sign you were never trapped.