As with most things with Google... it first seems a benefit for the users but always helps them (Google). They take the data away from someone but it actually

As with most things with Google... it first seems a benefit for the users but always helps them (Google). They take the data away from someone but it actually helps them (Look at AMP pages). In this case it is highly likely all DNS requests will be onto 8.8.8.8 and 8.8.4.4 DNS servers - giving them more info on what you are doing when no on their own services.