/blog does not respect the sticky bit

This is intentional. See the explanation in this issue, which is a duplicate.

In short, users will typically use the "sticky" bit to provide introductions to their blogs. These introductions will make little or no sense on the "blog" page, which lists ALL users' posts. Additionally, if you have more than 10 users with stickied posts, the /blog page effectively becomes useless, as it is now a static listing of all users' stickies rather than a dynamic listing of their posts.