It's always "in most cases". I simply don't see space for WordPress on green field sites anymore. If something is so small it does not require CMS - it's better to use pure HTML. Otherwise "in most cases" it's better to use headless CMS.
Do you work with non-technical users? There are few (none that I'm actually aware of) static site generators that are friendly enough for a comms team in a large enterprise for example. I note that Strapi also puts key features such as SSO behind an Enterprise pay wall... so that's already a massive negative.
WordPress has it's place, a blanket no against one of the most popular CMSes on the Internet is a pretty hot take.