I understand TFA is about unsubscribing from paid services or subscriptions. But still relevant to this discussion—I don't even click marketing 'unsubscribe' links anymore unless it points to the entity's second level domain. And even then, 9/10 times the link is merely CNAME'ed to some third-party known data broker's 2LD. These links have basically turned into a form of data collection unto themselves. I.e., 'is anybody home?'

NB: Configure you email clients not to automatically download HTML unless you prefer to let senders know you're actively maintaining your inbox. I love receiving 'if you're still reading please click here, otherwise you'll soon be automatically removed from our ML.' I consider that the real unsubscribe non-button in 2024.