Many altcoins even more volatile that bitcoin, because they do not have the liquidity like bitcoin. It is necessary to hold altcoins somewhere, that is why appear wallets like https://twitter.com/ownrwallet/status/1503739848569589764 which allow to safety store cryptocurrency.
Now a lot of new and prospective coins appear but all of then need to have a developed ecosystem and comfortable tools.
The more new coins and tokens appear the more demand in the wallets and exchanges that will support such coins and tokens. Cryptocurrency industry needs in comfortable tools.