Publishing with a SSG is so complex (and for many good reasons, as other comments mention). When anything gets this this complex, I pine for an end to end optimization targeting simplicity.
And I don't think the static site generator is the driving force for complexity here. The web ecosystem really seems nuts when you step back. When it comes to publishing on the web, I would really like to see something simpler gain traction.
Browsers are both amazing and amazingly complicated. I would like to see the 80/20 rule applied to see what comes after HTML -- maybe a reboot for 2023?
Surely I'm missing something that already exists?