You don't buy coins blindly because it is cheap so you don't get trap. Many projects are dead on arrival and so when you invest, you go down with it . You need proper research before investing on any project.
He's not talking about a coin project but USD. He wants you to invest in fiat money like they do on forex platforms.
I don't dabble in fiat trading and don't recommend it. The margins are so small you are forced to play on high leverage to get any significant profit. It's a meat grinder for newbies.
I also don't trust Biden. He look's like he could die from a heart attack at any moment.