And just because the collective disagrees with you doesn't mean the site itself is an echochamber. Case in point: You haven't been censored in any way, even though you expressed a different opinion. The collective has merely decided that your comment isn't worth looking at. People can still read it.
The source "googleblog.com" next to the title on HN is clear enough. It's a company that open sources a project on github (https://github.com/google/nomulus). I don't think the announcement is disguised, spinned or misleading.
My downvote as off-topic came because it didn't address the announcement itself. To be honest I had the impression you read the title only, not the announcement itself.
That said I think the title techcrunch chose is clearer "Google open sources the code that powers its domain registry"