Yes. It does. And it means you will use WP in a head-less setup. The main problem is not using a large part of your WP codebase (so much for lean and mean) and

Yes. It does. And it means you will use WP in a head-less setup. The main problem is not using a large part of your WP codebase (so much for lean and mean) and that some features in WP dont work as expected. Now you may want to keep WP up to date and the cost for this may be bigger then a head-less SaaS CMS.