Altcoins are clearly high risk high profit investment, yes if you won't do proper research - it is dangerous. But when you are sure about your alt, made good research, you can't name it dangerous at all. Cryptocurrencies are future and no one will stop it.
I agree with this, but only partially. because true, cryptocurrency is the currency of the future that can not be dammed technological progress. but it does not mean that it will not get ruined. because the cryptocurrency will be valuable if someone else is using it