Wait, isn't some of that just basic security and legal stuff though? A couple of clicks to confirm you really meant it stops someone else from unsubscribing you as a prank. Those rules they have to follow can make the process look more cluttered than it needs to be, for sure. But I'd rather click "yes I'm sure" twice than lose a newsletter I actually wanted because of one misclick. Doesn't that make at least some part of the process fair?
Ugh, it's like a little maze designed to outlast my attention span. I swear I've given up and just marked emails as spam because the "are you sure?" page had one too many clicks. My laziness is basically their business model.