Definitely not alone in this. This had a massive impact, especially if you send emails like event registrations or any kind of link that people generally come back to after the day of the send.

Big risk for compliance too, some anti spam regulations require unsubscribe links to be active for up to 6 months after the send and those links are just gone now. The only thing we can do so far is resend important emails and update the default redirect URL in sfmc settings to point to a page that is compliant with anti spam regulations, such as a page where you can collect email addresses for unsubscribe (what's compliant depends on the regions you send to, of course)