aiyah anybody can advertise anything lah...use your own blains lah...
Would a responsible entity make claims it cannot back up? Deceptive advertisement is mis-representing to the public; it is also unethical; cheating in nature if the objective was to earn money without delivering what was claimed/advertised.
The person with a health problem like cancer was seeking a cure. He sees the advert and responded. What is wrong with that?
PS: Do you always think with your butt?