Goodness. I said ‘usually’ only becuase it is unwise in most cases to speak in absolute terms. I have yet to see a good example of a regular blogger’s thread being hijacked for no good reason....
I have.
Your standards are two high, (and biased imo)
Your idea of a "regular blogger’s thread" don't compute with the reality of www protocol.
An example is the obsession that all bloggers should post their complete article.
Or a link to videos in the body of their posts.
Breitbart, Malkin and many other embed videos on their sites with no notice when their articles are posted.
So they should be admonished also if you want consistency.