But a bigger issue is at work here - censorship. Twitter is being pulled in two opposite directions. It's a platform in which authoritative content is hosted. For example, the president conducts foreign policy through Twitter. And Twitter is also a platform where bots try to influence elections, people post images of dubious taste, and plain old lies are told.
Twitter has been leaning ever-harder into the role of curating authoritative content. The idea of verified identities as a prerequisite to post has been floated, and will no doubt resurface.
All of this leads to a dead-end. Twitter won't be able to afford to host anything remotely controversial (i.e., interesting) for fear of upsetting the thought police.
The same problem applies to Facebook, Medium, and all the others.
The reason to blog is simple. Because sooner or later a rational human exploring the bounds of human knowledge through writing will post something that will make one or more powerful people scared, angry, or offended. A blog makes retaliatory deplatforming much more difficult to pull off.