Yes. Visitors to the site are vulnerable to Man in the Middle (MitM) attacks, IF they click past the warning (which many people do)
That’s not true. The encryption still works as well as it did 3 days ago, and doesn’t care if the certificate is expired.
An expired certificate alone doesn't enable a MITM attack.
That’s not true. The encryption still works as well as it did 3 days ago, and doesn’t care if the certificate is expired.