Having an unsubscribe link is the minimum, but if I click it and I see ANYTHING other than "you're unsubscribed", I'm going right back to my mail client and marking as spam.
I've become rather paranoid about a malicious actor sending an email that looks like regular spam, but where the "unsubscribe" link is the attack vector, so I've been using the "Mark as spam" button for anything unsolicited that comes in from a sender I've not previously engaged with.
Complete agree with you, I also don't like it when the unsubscribe text is smaller than the rest of the text, subscribers that never open your emails end up hurting your engagement over time and in turn your deliverability, better just make it easy for people who are no longer interested to unsubscribe.