Whether people will get scam or make a profit, they will know the consequences because we can only suggest them not to buy a coin, but if they believe that coin or token can give them a profit, we can not do anything.
We need to take care of ourselves and always analyze the coin, so we don't buy the wrong coin.
Related to the @OP mention, I think they will know by themselves, and they will be careful to search for more information about that coin.
If you look at how the cryptocurrency is being advertised now, then it consists of an announcement of the appearance of some kind of token, which, according to unknown experts, will grow in price, which means that it needs to be bought. And many people do it. With this approach, disappointment awaits many.
They don't learn about the project, but they search for what project can give them the chance to make money.
It's happened to the DeFi projects. With many DeFi projects out there, people are trying to buy many tokens from the DeFi projects.
But I don't think they know what projects they bought the token.
We don't have to follow their way because we don't want to get the same experience if the project can not reach success in the future.
We can still search for more information to get the right project to invest.