Well, it's not even 'just a blog', it's a blog hosted by oracle.com about the author's employment at same. The standard of professionalism should be higher given the direct link, methinks. If it were a personal blog on a personal topic, it wouldn't matter as much.
I think if recent history is any guide, a C-level who claims "you can't hold me accountable for stupid shit I say on my personal blog" isn't going to be one much longer.
