The CDC has, for more than a year now, been saying that washing hands is a distraction from aerosols which are the “real” cause. That might have been true in 2021 and might still be true now. But whether the CDC recommends for or against it doesn’t actually indicate very much about whether it reduces the spread of COVID, because the CDC has been erratic since the beginning of the outbreak. So that doesn’t count as evidence either way.
The CDC has, for more than a year now, been saying that washing hands is a distraction from aerosols which are the “real” cause. That might have been true in 2021 and might still be true now. But whether the CDC recommends for or against it doesn’t actually indicate very much about whether it reduces the spread of COVID, because the CDC has been erratic since the beginning of the outbreak. So that doesn’t count as evidence either way.