I don't think that's true. Because advertising fuels these free services, we need to deliver advertising. Advertising that is more specific to your needs is more relevant to you, and it is more relevant to the advertisers, as you pointed out. It is more valuable to the advertiser, and we hope it's more valuable to you as well. In effect, it's answering a question and it's answering a need that you've expressed an interest in.
However, you can turn off tracking on your browser. You can turn off location services. You can tell us within your account profile that you don't want us to keep track of your preferences. That will provide less detailed and less precise advertising. Hopefully, it's still useful.