@rudolf well, that's not exactly an issue as there is no app calling home in initial #lineageos installation and if you are forced to install and use one, then you probably can't block it on firewall either.
Btw you are many times able to remove "non removable apps" using adb shell command:
pm uninstall -k --user 0 <package_name>
But looking at it second time, it will be good addition in some special cases, so I will add it to the article. Thank you!
It is not clear that your article says one must have Lineageos.
And even if, Lineageos does contact Google
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