Are we saying that the CDC is recommending a drug that could potentially kill people? And they recommend it for use in all trimesters of pregnancy?

All medications bear risk. Tylenol kills about 500 people per year. Ibuprofen kills around 15k.

Malaria kills 400k per year. Would you rather be pregnant and infected with Malaria, or pregnant and taking a drug with the approximate risk profile of ibuprofen?