If it's just a collection of essays, what about a static site? You can set one up on Github Pages or Gitlab Pages with a minimum of coding. There are also virtually no security concerns and maintenance is minimal.
You'd have to take all of the text from the Wordpress blog and format it into Markdown but that shouldn't take a huge amount of time unless there is a lot of weird formatting or different media types.
This is absolutely the easiest solution. We did this for open.media.mit.edu in order to archive the old wordpress site. Used wget to fetch all of the HTML and ran a script over it to remove some obvious clutter. Happy to help out. Your writing really shaped the way I thought about the potential of an open internet.
You'd have to take all of the text from the Wordpress blog and format it into Markdown but that shouldn't take a huge amount of time unless there is a lot of weird formatting or different media types.