My reaction to this is that it's an effort to keep users within the "walled garden" of Twitter, which is not the best thing for those that write. Recall the story with Medium - yes, you get broader reach with less effort, but at the cost of giving up control of your content. I know that I am talking with an overly developer-focused lens (a-la "you can reimplement Dropbox in a weekend"), but self-hosting blogs outside…
What's wrong with linking to your blog? Twitter was once explained to me as short form blogging which I thought at the time was absurd but I kind of get it now. The problem is when you try to be all things to all people you fail. I'd so much like someone like Elon Musk to take over Twitter. In the case of Musk I trust his judgement over the team running Twitter now. Can you imagine a group of two dozen people working…
Nothing, except that no one will click on your link.