Are there any brands that are known not to do anything like this? I'd like to reward them with my patronage.
My uneducated guess is that it would be pretty difficult for something like this to autoinstall on linux without your permission. They can "recommend" you to install their app, but just plugging it and getting adware/malware, I hope it would be difficult.
Unlikely for any brand out there not to do this. Samsung will do it eventually if backlash isn't bad with this one with Alienware/Dell/LG. Maybe Benq, viewsonic, monoprice? I dont trust Asus not to do it either.
I have a LG TV and never connect it to Wifi. Never did I think just plugging in a HDMI cable would do this.