As far as posting blog posts, we think this is just as fair as the Chrome team's communication about their own WebGPU implementation, which included a public demo and sessions at Google I/O which were widely reported.

As for the post getting upvoted to the top of Hacker News, that's the community's choice, not ours. The initial poster wasn't even an Apple person (afaik). If you are insinuating some kind of vote manipulation then that is inaccurate.