Totally agree for this narrow use case. But you're also correct that if you're a startup with a marketing site--going the Gatsby/Hugo/etc. route is a total disaster. Have seen so many technical founders make this mistake.
What happens is you realize, crap, my team needs to publish content for SEO and build new landing pages...and they aren't able to do my esoteric Git + Hand coding + Markdown/Front Matter + build process steps. So then you get sold some convoluted "HEADLESS CMS," which claims to solve your problems, but is actually a total freaking nightmare to setup and maintain (god forbid you ever want to change anything).
Have witnessed this charade more times than I can count. Seriously, just use Webflow. I know HN is highly disgusted by the idea of something being marketed as a "no-code" tool. But Webflow basically is a static site generator + headless CMS, just with a UI layer for non-technical folks. When you click publish on updates to a Webflow site you're basically automating the recompile and deploy steps.