On Confluence Cloud, it is possible to share publicly a few pages for users who don't have a Confluence license without having to open the anonymous access to the entire space through the Public Links feature.

However, this feature still does have the ability to share Blog Posts publicly, only pages.

As many of our users uses the Blog Posts, it would be a good experience being able to share the blog posts the same way it is possible to share the pages through the public links.