I'm sorry but GP is exactly right. Google has a horrible track record for their products. They can't even profit from vendor-lockin, as they kill off all the products sooner or later leaving a lot of angry customers.
google deployment manager. it has incredibly subpar support for other GCP services. all support interactions resort to them suggesting migration to Terraform. we do use it in production, but not without great headache.
this isn't an explicit kill-off, but certainly purposefully offering bad support
When AWS continues to run a service looong after it stops being actively developed (looking at you, SimpleDB), they get praised. When Google does the same thing, it's paradoxically more proof that Google deprecates things!