paul68 please remember there is no right or wrong, have a lot of fun and enjoy.
There is some irony to your comments, but your intention seems well enough.
There are plenty of scenarios where security is paramount, while still having a desire to use Google services. Not everyone is anti-Google, even among GOS users. Some just wish to have more control over which apps have network privileges, or to have fine grain control over other elements, such as storage scopes.
I am in the camp of avoiding Google services wherever possible, but I respect those who feel differently and who still wish to take advantage of all that GrapheneOS has to offer.
It's about having the freedom to choose.
Merry Christmas to you too.