You can make this argument almost anytime you see "a series of tweets", but I agree this instance is particularly bad.
I really wish people would just write a blog post, and link to it with one Tweet.
Almost no one would read it. I've done it both ways. People read threads. Blog posts might get traffic if you stumble on an uncontested search term. You might say "just link it on Twitter!"
Doesn't work. No one clicks.
Why? To me, it is presented as a long page of posts in chronological order, like a blog post divided into sections.
For the same reason webpages don't typically put paragraph breaks in between every sentence for long form articles?
And excessive visual markers between paragraphs makes it the ‘worst possible medium’?