We often need to take Snopes with a large grain of salt. That said, this maybe be of some interest:
http://www.snopes.com/hackers-stole-273-passwords/
It costs nothing to take the precaution of changing passwords.
May I also recommend that people consider using:
(1) more secure offshore email services (e.g., unseen.is , protonmail.ch );
(2) PGP or GnuPG; and
(3) private VPN (e.g., nordvpn.com )?