There is no one-size-fits-all answer to this question, as the answer will depend on the specific circumstances of each individual blog. However, in general, most people would agree that blogging is considered publishing, as the content that is posted on a blog typically constitutes an original work.
This means that blog posts typically require the same level of skill, effort and professionalism as traditional publishing efforts.
While there are some significant differences between blogging and traditional publishing, these differences are not always easy to spot. For example, while most blogs rely on user submissions to make their content more diverse and interesting, published works typically undergo a more rigorous editing process.
Additionally, while blogs may be created for personal or hobby purposes, published works are typically produced with an eye towards reaching a wider audience.
Ultimately, it is up to each individual to decide whether or not blogging constitutes publishing. The key thing to remember is that there are many similarities between the two activities, and it is generally accepted that blogging constitutes publishing when the content posted on a blog meets the standards that are typically associated with published works.