There are literally zero GCP products in that list. (Despite the unfortunate naming, both Cloud Print and Messaging predate GCP and have nothing to do with it.)
GCP has been around for a fraction of the time of Google as a company. It is perfectly valid to have at least some concern here as Google as a company has a long track record of shutting down products. Conversely, it is tenuous at best to use the argument that since GCP has never shutdown a product that they won’t given how many of their products were launched very recently.
Yes, that argument has been made ad nauseam, but the previous poster was asking specifically for GCP products that have been shut down -- and the response doesn't seem to contain any.