It is factored in really. The people who advertise on that yahoo keyword are aware that somewhere close to 80% of clicks or views are worthless to begin with (c

It is factored in really. The people who advertise on that yahoo keyword are aware that somewhere close to 80% of clicks or views are worthless to begin with (clickbaits, dark patterns, actual fraud). In a lot of cases it is still worth it. In many other cases people perceive it to be worth it, but don't really do the research involved to prove that it is.