there is always a risk when there's an advantage on it. its fine to invest on altcoins if you already know the progress that the altcoin were having. Have seen different altcoins who's now having the best price that they can have.
True, for the risk it will always be there when we are looking for a profit, so in investing everyone is required to be more careful in choosing anything and always use research before making an investment, be it investing in altcoin or others.