[pascalxus]

You should certainly report it to the appropriate managers. But, ultimately, ethics is highly subjective: and it's not your choice. You've sold your time to the company and have to produce the products it makes: even if you don't like their ads or product. You can say no, they can fire you and hire someone just like you and the product would still get made.

Being a doctor or developer is entirely different. The doctor has much more freedom in deciding a course of action. As a developer you have very little power to decide what get's produced, because it's not your job function: that's what product managers are for.