This will be interesting to see how this plays out internationally, since some countries don't have the same anti-spam laws we do. Will I stop getting notifications from some of the non-EU, non-US services that I am a member of just because they don't have in-email unsubscribe links (I can still unsub on their website)? These are not companies under sanction, so I have every right to communicate with them freely, even if they don't obey the same laws as where I live. Should I end up suffering damages because Google blocks legitimate communications, will they be taking liability for their interference?

For clarity, I am not against anti-spam measures, but I do worry about centralized services being overly strict and doing damage to their customers, especially if it is so draconian that it prevents delivery of important communications as retaliation.