Crypto or altcoins or shitcoins aren't safe and shouldn't be used for long term holding. Bitcoin is the best crypto to hold for long time since it has been proven can survive for 13 years until now.
Altcoins not safe. Maybe partly agreed. Yes there are plenty of altcoins that arent safe but dont generalize it all. There are some also that are good and has potential. I agree that btc is good for long term but you cant ignore other projects that are also has good use case and potential. Its just that you need to be very careful cause some are really money scum bag only.