I shouldn't have to turn something off that I didn't want in the first place and wasn't notified that it was being turned on. That is the biggest issue here from what I understand.
as far as I can tell you have to opt-in to Buzz in the first place.
when mine was activated, I got a splash screen asking me if I wanted to join, or if I wanted to just go to my email.
but then again, I'm probably the only one who got that choice. everyone else was forced at gunpoint by Teh Evil Google.
but beyond that I understand what you are saying.