Yes, because the heads of several airlines, including Delta, asked the CDC to change the guidelines so they could get aircrews back to work faster.
Delta Air Lines Inc's chief executive asked the head of the U.S. Centers for Disease Control and Prevention on Tuesday to shrink quarantine guidelines for fully vaccinated individuals who experience breakthrough COVID-19 infections, citing the impact on the carrier's workforce.
www.reuters.com
Like with everything else about this pandemic/endemic virus, this isn't about science, it's about money and politics of powerful people.
Though at least this time the power is moving towards ending the farce, even if it's for semi-selfish reasons.