It's theft and plagiarism.
It appears you got away from your keeper again. You really need to grow up and get a real life.
Your beef is with the content of the blog post. Whether it is an imbedded video or a snippet of a news article, proper attribution is not only considered good form, it is necessary to avoid the charge of plagiarism. You might have the right issue but you propose the wrong cure.
Consider the opposite case and apply your "rule" from your post. I author and post on my own blog an entry drawing heavily upon news stories and even embedding posted-elsewhere video clips. I use many, many sources and give full and proper attribution within the body of my blog in full APA and Chicago style. Are you saying I should not put myself in the spot of the author when I post my masterpiece on FreeRepublic? That's ridiculous. With many sources, should I pick one and park it in the author spot? All of them? leave it blank? Fail to take proper credit for MY contribution to the piece? of course not. I am the author.
So NO, humblegunner's case does not hold water. [with proper attribution to "My Cousin Vinny," written by Dale Launer (1992), quote performed by Marisa Tomei as the character Mona Lisa Vito.]
Now I hope you take that constructive criticism in the same spirit that you wish others would take yours.
That's actually a good working example of how YOU are the post author referencing, dare I say plagiarizing, someone else's work!
Beware the petard.