I think linking to our own blog posts or tweets is also disallowed (?) so we have to wait for someone else to blog about it? I've never quite understood how to solve this puzzle as it means a reasonably large class of pertinent information is impossible to post to HN.
I think the rule that may be tripping you up is “Please don't use HN primarily for promotion. It's ok to post your own stuff occasionally, but the primary use of the site should be for curiosity.”
That rule is focused on avoiding self-promotion. For example, if you’re working on a cool new idea, don’t just post a new link to your site once a week. But writing a blog post to dig into an element of something Typora has changed is pretty clearly fine.
If you want to say what you think is important about an article, that's fine, but the place to do that is in a comment to the thread. Then your view will be on a level playing field with everyone else's: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...