If you want to do any regular content marketing/blogging, custom landing pages for SEO, a/b test copy, or even just update the design of your site...Jamstack paired with an enterprisey headless CMS is just an absolute freaking nightmare. I like to joke that Jamstack is the fastest way to build a site that nobody ever visits.
Literally every Saas company I work with has switched their marketing site over to Webflow for this reason (especially since most Saas companies get a majority of inbound leads through content).
And they seem to be pretty happy with it! So I think you’re definitely on the right path.
I have none of the traditional armchair critiques for you. Just keep doing what you’re doing! Marketing sites should be easily controlled by marketing people.