But just because Google is killing the service next year it doesn't mean work has stopped altogether. Before it's shut down, Google will roll out support for external CUPS print servers, including an authentication policy to configure connections to external CUPS print servers, as well as APIs for third parties to access print job metadata, submit print jobs, and add printer management capabilities.
Why spend resources on a dead project? It's not as if there aren't other Google projects that need a bit of help right now (*cough* Stadia *cough*).