There is no "safest" altcoin in this world. Every altcoin has their own risk and you have to face it anyway. It's not about how to rid that risk but how to minimize that risk as possible. Try to read and don't even try to following other recommendation because it would be bad if you were lose.
Indeed that is correct, the safest thing you can do for yourself is to evaluate the altcoin that you want to invest research thoroughly and dont mind what other say about the coin for who know that person might be connected to the one you want to invest and only bringing you lies.