Some altcoins or let's say that they are many now that are becoming fake and being soft launched in the market. They're just testing the waters if they're going to become popular and gain volume. But not all of them are fake, we know that there are legitimate ones and are being used by many like the top ones. If you're in the new ones, you'll have to deal with the risk that they bear usually when they come out freshly to the market. So if you have earned like the new releases and they're being listed in good exchanges, you won't call them fake because you earn upon dumping it.