Many ads are justifiable to block in and of themselves because of the message they send. "Do you have ugly crooked yellow teeth..." Why do we need to tell peo

Many ads are justifiable to block in and of themselves because of the message they send. "Do you have ugly crooked yellow teeth..." Why do we need to tell people that crooked teeth are inherently ugly. This sort of add is the reason we have girls under 10 worrying about getting braces when their dentist never even mentioned the idea and who are whitening their teeth. Not all are that bad, and some ads exist just to inform. But given that someone doesn't know until they have already had to listen to the ad, it makes simple enough to justify.