I do not think that people have lost interest in the Altcoins, in any case, those who are in the crypto market for a long time. Previously, the Altcoins showed much more rapid growth and good profits. But today top coins have become too "heavy", too much money is invested in it, too many people want to sell the purchased coins at no loss. This leads to the fact that the price is extremely difficult to grow in such conditions.
Only people who don't know crypto are losing interest because prices are falling. falling prices are natural, so why aren't you interested because prices fall? even though the price will recover after that, actually the falling price is an opportunity right? I am not sad or even lose interest, because I understand it as market dynamics
That's the very important tools when you investing around this market, the better you understand the deeper you engaged yourself, why would you lose interest if you know how the drill works, if you know that chances to bounce back and it's only natural for the market to experience some downfall and the next to follow will be another rise and bring green to your invested money.