In the end when I was asked to install teamviewer (I use Linux BTW) I could see all thr process even after I turned it off. i would find myself killing off the 3 or so process that maintained a connection to a server. Heck i get alot of I am silly and its secure. Now I have not had anything happen to me and yet to see anyone beyond stories online. Do not take my word for it run a debugger or trace it wireshark do what you will you will get a suprise. sorta like when I ran skype in linux and traced what it accessed (scary stuff)
No need to take blame - I gather that TV is not exactly a transparent organization, and perhaps their customers are less amenable to security update or outage post-mortems than most HN readers, but they ought not stick their heads in the sand.
As a paying customer, I should not have to find this out through Reddit and HN.