I wonder how different the response from Github would be if this blog post was instead, "Oops, Github's confusing UI made me delete the entire project metadata... so since we're forced to start fresh we decided to move to Gitlab/sourcehut/etc."
There is no way in the world that the kind of person who writes a post like this and clearly places so much emphasis on gamified social media stats as a proxy for self-validation ever chooses to move to Sourcehut. No way. GitLab is most likely out of the question, too. The author of this post is exactly the kind of ideal customer for what GitHub is "selling" and that the others can't provide.
There was a way to say this without framing it as a personal attack. The author may care about stars because they find that increased engagement leads to higher quality contributions, for example.