That's the old method and since crypto is all about personal responsibility of safety, one should do his own research before taking any decision even if the offer is posted in the place of Google doodle. If someone is not sure about the investment then he should not go with it before acquiring complete details of the same. I have seen people losing money in the greed of getting anything like 5x returns.
Plus anything that is "Too good to be true" are mostly scams, i prefer not participating in those. I mean everything in this world (crypto and real) works that way, ain't it too obvious?