[gnicholas]

> Also, I don't see a problem if a person finds my emails uninteresting and unsubscribes.

Sure, but do all of your recipients know that? The point is that some people would be very uncomfortable doing this, even if you wouldn't subjectively be offended by it. And as the author notes, doing an opt-in system makes things complicated and potential excludes less tech-savvy folks.

[sm4rk0]

There are ways to solve this: 1. It could be written in message footer that I won't take unsubscribes personally. 2. That person could just create a filter for that mailing list to avoid unsubscribing.

Also, less tech-savy folks could just ask for help and I'd subscribe them manually.