I can’t think of a single google cloud product that’s gone GA and then been shut down. Google has different attitudes towards consumer and enterprise products.
That's just poor branding. Google Cloud Print was not part of Google Cloud Platform.
(I feel like Google just doesn't understand branding. I remember when they launched the Pixel C after the Chromebook Pixel, and it ran Android instead of ChromeOS. What was once a Chrome brand became an Android brand. I guess because Chrome was doing pretty well at the time, and Android just reminded people of slow phones that ran out of battery instantly. Sigh!)