Yeah, this is really pretty obnoxious to read. It also gives the impression that the content is inconsequential if it's just a series of tweets and replies.
OTOH, it's more likely that tweets are being read than long boring text of wall blog posts.
One advantage of tweets is that you can link better to a specific part you want to. We still can't link to an arbitrary location in a HTML document if the author hasn't put down anchor links.
When a text is too long and boring, the solution is to make it short and interesting, not to post it on a platform that is designed to be so addictive that people can't resist reading it. But yes, being able to link to and highlight individual pieces is nice.
One advantage of tweets is that you can link better to a specific part you want to. We still can't link to an arbitrary location in a HTML document if the author hasn't put down anchor links.