The well has been poisoned. If most ads were politely advertising local businesses, nobody would object. But the essence of advertising is to seek attention, and the inevitable result of that is ads that are obnoxious and discourteous. Even if they are not outright dishonest or manipulative.

Businesses do not communicate between themselves using obnoxious language. Business letters are stereotypically formal. They reserve the brash language of advertising for their potential customers, and those subjected to it are within their rights to point out this hypocrisy.