Crypto trends often set a vector in a certain type of altcoin and many developers drop their old projects and start making something new based on the current demand. If you buy new projects during an ongoing trend, you are taking a risk. If projects appeared before or at the beginning of a trend, it can be a promising investment. For example, when the metaverse trend started, projects like MANA AND SAND already existed on the market, and therefore at the beginning of the trend, you could add them to your portfolio, because the trend would have raised their price even more and they definitely would not have been projects that were created for profit-making at the expense of a hype.