To be fair CDC recommends 7 days after onset of symptoms.

At least 7 days have passed since symptoms first appeared if a negative viral test* is obtained within 48 hours prior to returning to work (or 10 days if testing is not performed or if a positive test at day 5-7)

https://www.cdc.gov/coronavirus/2019-ncov/hcp/guidance-risk-assesment-hcp.html#:~:text=At least 7 days have,of fever-reducing medications%2C and

It does seem a bit rushed to me