These types of ads are extremely deceptive, being designed specifically to misinform users into believing that they are legitimate questions and manipulate them into taking an action that they would not have taken otherwise. The disclaimers have extremely poor contrast, below that of accessibility guidelines, which is designed to reduce the chance that people will notice it before they try to open it. The background is also identical to that of normal questions, further deceiving users.
Far from increasing engagement, this will markedly decrease engagement as new users leave the site the moment they find out that they feel they were being manipulated and taken advantage of.