>Just zip it, be professional, focus on what you are doing and not on others.

How do you propose they "focus on what [they're] doing and not on others" when their entire project is dependent on other's (Google's) work that directly impacts their own users? There's nothing about this blog post that is unprofessional. GrapheneOS released a patch for a rather severe performance bug, which is outside the scope of their normal work, so they provided context into why they made the decision to do so.

Look to "HugOps" as inspiration: when someone else is having a bad day, offer them a hug rather than running them down.

The article uses phrases like "completely broken", "awful", and "<delay> wouldn't be a surprise". Which might be true but it's not helping.