Regardless of whether this change is applied, I think it would be good to suggest blog posters to use heading levels to convey structure, not style. Currently, post headings are often used for the latter (for instance, to make a heading text smaller). I haven't tried myself, but it seems that using headings in this way can make it harder for people using assistive technologies.

So, when writing a blog post, the title has the highest level (currently H2, but H1 if this patch is applied), and the headings in the body should use lower levels accordingly, without skipping levels.