I only know the situation which touched dozens of my friends and acquaintances. Say, you’re a relatively successful software professional in Russia, who has a small apartment and a car in a big city. Then the war with Ukraine starts, and all Russians are automatically sanctioned and blacklisted from the international financial system. You don’t want to make drone software or facilitate black-market oil trading, so you decide to sell everything and leave the country with your wife and kids to work elsewhere.

What, in your opinion, are your options for transferring abroad the cash you got from selling your hard-earned assets?

He didn't imply he was referring to "lower class people." He's referring to people who have savings in countries with volatile currencies. Even for $100, having a stablecoin reserve can be a saving grace. Especially when trying to find asylum elsewhere.

In Argentina, the money changes pay more pesos for 100 dollar bills than 20 dollar bills, and won't accept money that is too beat up. Definitionally it's not the poorer people who can buy dollars in large denominations.