The thread states that Google is putting out patches that affect other Android vendors too.

They're not treating GrapheneOS very differently from other vendors, except that Graphene isn't relevant enough to sign a contract with because they don't make phones (or money, really).

Google should be putting out the code and patches like they used to, but the constant badgering of Google on this issue feels off. I don't see anyone complaining that Samsung isn't supporting their security-focused fork enough, or complain that Apple is delaying the bootloader unlock process by a day.

Despite their very worst, selfish intentions, Google is the very best vendor of commercial open source software. While Google's open source project collapses, there's plenty of space for other vendors to step in.

We should bemoan Google's fall from grace, but only because they're on the way to becoming just as bad as every vendor but Librem if they keep this up another decade.