It used to be people wrote long letters to each other, like with a pen and paper. In that format, you had to make a case and defend it. In the new format, if you're writing more than 3 sentences you're a regular Tolstoy. The format has gotten shorter, the response time more immediate, and the audience less educated.
I remember when C++ was finally overshadowed by newer languages like Java with fancy IDEs.. Old timers quickly found a lot of complete crap coming out from programmers who never had to do things "the hard way" If you never had to take the time to think about classes before you wrote one, everything is a class.
Likewise if you've never had to take time to think about what you're writing before you comment, everything is a short, knee-jerk response.
Combine all of the above factors and you get an endless stream of tripe. It's the uneducated talking to the uniformed about topics that make them unhinged.
It's interesting that somebody associated with Twitter would make that observation. The format keeps getting shorter and shorter, and the time frame more and more immediate. Can't he see the connection?