Trying to make sure no one has your data (except them).

Trusting Google to oversee your privacy is like asking a grizzly bear to make sure no one eats this big pile of fresh salmon

Will it kill Google ads cookies too?

This is not a great article. So many words with so little information. In other articles I found it sounds like Chrome is finally getting third party cookie blocking. Other browsers have had thir for years. Its nothing new.