That way the static site works; Publii has to generate all pages and then send them all to the server.
We can add an option to generate for example the last 10 posts, but what if you add a new menu item or script to the website?
Generally, Publii is a tool dedicated to small blogs or portfolio websites; if you do not post every day I think 5-10min. it’s not a short time and hard to bear, in the meantime you can drink a coffee 🙂