The flip side of the dynamic content is that every Wordpress I've ever worked on is a horrifying mountain of plugins managed by the world's worst package manager. Plugin A needs to be updated because it has a vulnerability, which requires plugin B to be updated, but the theme hasn't gotten updates in 6 years and plugin B is using new stuff the theme doesn't support, so either the site has to be re-built with a new theme or plugin A just needs to be left at a vulnerable version.
Static sites get around some of that because vulnerable plugins only exist at build-time. I'm not worried about using an old version of Hugo or Jekyll, but I'm very worried about using old Wordpress plugins.