Ethics are largely irrelevant here. The advertising industry will simply do what they have always done, which is the things shown by their models to bring the most revenue. Asking the advertising industry to be less manipulative is like asking casinos or supermarkets to stop employing behavioral psychologists to figure out the best ways to get people to spend money.

>and the fact that the host is speaking for it says something

In most cases (e.g. all except the ones where the host would mention the product even without any incentives), it just says that they value the money they get more than their viewers' attention.