Ads are built on one premise. The response. To drive up the cognitive activity to bring a closure to a sale. The works of an ad will do that, maybe nocebo a problem to sell a solution, or to trigger a magic key of reverse engineering that will lead into a hit. It can't be bought, no payola can buy a hit or fame.
None of that exists.
You have the right as a buyer, looker, and the one with the impression. To say no, that could fall under the category of a reaction, yet it could be a mindful action with the budget in mind.
To react or to respond that's what it is to be done with intent behind it?