ACF Blocks vs ACF Flexible Content

Hello, everyone.

I'm aware you can build individual WP pages with either ACF blocks or ACF Flex content. Now, what about blog posts that require you to insert custom blocks like CTAs, featured blog posts grid, etc?

From what I know, if you go the ACF blocks route, you get to reuse these same blocks, either for building pages or inserting them in your blog posts.

I'm not aware how one could achieve the same experience with the Flexible Content route. Could you educate me on this?