altcoins will not die, because technology is all there, so we will always see altcoins, but not all altcoins will survive because most of the altcoins are scams and other things that do not make the project last long.
I absolutely agree with you, altcoins are new branches of development in the crypto industry, new concepts, technologies and unique functions, in addition to those provided by Bitcoin. You should pay more attention to the latest altoins, sometimes by investing in them, you can increase your capital several times.