My daughter is isolating too. The issue for me is the fact she was wearing a mask and the confirmed case was also wearing a mask doesn't stop the isolation, so the benefits just aren't there.
This is unscientific, unless you have proof that the outbreak wouldn;t have been WORSE without masks.
No one said masks would stop all covid cases.
Seatbelts don;t prevent all car deaths. Bet you still wear yours though.