Yeah, I agree that the title is somewhat misleading, there's no such thing as "Safest" crypto as we all know that it's very volatile, and also fluctuates in short amount of time. That's why is really hard to give advises here. Maybe choose in the top 10 altcoins and then watch how it will perform. You need to play a lot in this markets and then see how it's going to fit in your goal, short or long term and your risk appetite as well.
As I mentioned I won't blame the content creator for using the word because there is no thing called safest investment and cryptos as well but they are better in somewhat and also there is clear explanation of why he consider it as better but no one can be successful if they invest on something which they doesn't have knowledge about it.