You didn't actually look at the image you posted did you. It says quite clearly that google autofollowed people. The only button that is there is an "OK". I just clicked on buzz for the first time and I got this: http://imgur.com/ji5lx
There were already messages there. They were almost all about how to turn off buzz.
The argument is not so much that you were auto followed (which only happens when you click the buzz tab on gmail) but that you didn't get a chance to do anything about it.
Clearly you have option to edit your followers list and change privacy setting (which was the complain I was referring to). If you choose not to do anything about that and ignore the prompt and go ahead click OK. Should you not take some responsibility for it? I am not denying that google auto following is not in bad form I am just pointing out that changing/editing it is extremely easy and right in front of you.
As for turning off buzz. It is at the bottom of your gmail window. One click away, but not obvious.
There were already messages there. They were almost all about how to turn off buzz.