Advertising is a pollution on social space. A deliberately attention-grabbing advertisement represents a very real theft from people, and a public space covered in it, even more so. Advertising is designed to exploit inherent human weaknesses and biases, to manipulate behaviour. It's abusive. Seen from this position, Google is an abuser.

The required ethical conclusion is not "inconvenience yourself so you can be more respectable", it's far more extreme than that. What about saving other people from it, or activism to ban it completely, like we restrict noise pollution and physical manipulation of strangers?

Using ad-supported services and an ad-blocker might be unethical theft, but the anti-advertising position is against-adverts not how to treat Google fairly; it's not about being "ethically aligned".