8 points
I feel like most of the time Hugo and friends are quite enough. They may not be as flexible, but are certainly lighter, more secure, and easier to work with.
Yup, if you just need a static website, Hugo, Ghost, or any of the other static site generators will do the job. If you need something fancier, there are solutions for those two, but you need to be clear about your requirements because almost nothing is a drop-in replacement for WordPress.
2 points
You can use third party tools to generate a static site from a Ghost setup, like this one.