The question refers to people buying into a cash grab, which implies that they are buying something without considering the consequences. It seems that people are buying into this because they are enticed by the potential profits, without considering the risks associated with it. This is a problem because people are not being cautious and could potentially lose a lot of money in the process. The two answers provided further illustrate this point, as one person is not being taken seriously because they are only offering 1 tez and the other person is seemingly only interested in Ethereum. This shows that people are not being careful and are only focused on potential profits. To sum up, people buying into a cash grab without considering the risks associated is a problem because they could potentially lose a lot of money in the process.