You can already create a nice blog in X3, like I did here:
https://mjau-mjau.com/blog/
It's really not that complicated. It's just pages inside an X3 "blog" page. For each blog post, I simply upload an image and write some text ... You could even copy settings from one blog post when you create a new one, if it makes things easier.
With an extended blog-section, perhaps it could auto sort posts by date. X3 is still a folder-based website though, so a page will always be a folder, and I don't see any disadvantage of this. Let me know if you have any specific suggestions.