It's not simply worry about the economy. It is worry about the stock market, a sector of the economy that disproportionately impacts the 1%. Rather than taking command of supply chains and production, they're printing money to help their friends in the stock market. Being concerned about the economy is fine if they mean being concerned about how physical goods will reach quarantined areas, but the leaders of the US are very obviously not doing that. But at least we learned that spending $1 trillion to make a number go up 1% for 20 minutes is sound economic policy.
Unfortunately, that's the reality of the Capitalist economies. It's built on a house of cards. A stock market crash will lead to lower investment, leading to lower job creation...... and so forth, and so forth! a vicious spiral! That's way they are trying to pop-up the stock market!