Then what altcoins other than ETH are not scam? What about a FUN token?
Before you start investing, you must answer the question of why do you invest, if the answer is because the price of a currency has reached a thousand dollars, this does not mean that it will reach that price again, and there is no obligation from the developers to reach a certain price.
Altcoins are for non-cash payment, and therefore when it is a duplicate of another project, it will only be suitable for making payments, which will be less in the future due to the presence of many competitors and the lack of advantages.
Therefore, the continuous development, the distinctiveness of the project, and the adoption is what makes these currencies an investment, which is not available in most of them.
Once these factors are found, this currency can be considered as a valid investment but a valid investment not mean profits.
to make it easy buy bitcoin is the shortest answer.