[pintxo]

Maybe I am missing something here, but how does this help against being tracked by google through google analytics and/or their ad-network?

Sure they cannot 1:1 link your {analytics, ad} identity to your actual Google identity, but I am reasonably sure that they have all the data necessary to do it via (not too many) connecting dots.

[rapnie]

yea.. you can use something like Privacy Badger and block analytics

https://www.eff.org/privacybadger