There are plenty of scams and malware being spread through ads. Furthermore ads are a parasite that wastes most people's time for no benefit with no official way for them to opt-out (a lot of services don't allow you to pay money to opt-out); it'a a cancer on society.

> Especially in this case where PII data is not being provided to the advertising company.

You are literally talking about capturing e-mail addresses so you can pass them to an advertising partner to target ads to these users. How is that not PII?

They do. Advertising's whole purpose is to manipulate people into doing what companies want them to do. Not every company has your best interests in mind. Due to this inherent conflict of interest, ads should be viewed with healthy suspicion at best.

Banning tobacco ads helped reduce smoking in my country. We should ban a whole lot more.