Buy Bitcoin when FUD is upcoming while the price of Bitcoin doesn’t move much or dump harder. You will see the chart that it’s just sideways despite multiple FUD is piling up. This means that mean that there’s still a lot of solid Bitcoin holders while weak hands is leaving. Doing this will give you high chance to purchase on the bottom trend.
***Not a financial advice.
Perhaps his point is that when "there is blood on the street, you should invest". Because for sure, when there is FUD around, people are going to sell because they are afraid that the price will decline.
And if you are a wise investors, you are going to wait for that time, when everyone panics and then you see a big drop like 5-10% in a day which means there is massive selling. Then that is the opportunity that you are all been waiting, to buy cheap BTC and then just continue to HODL on it.