Are Smart TVs Spying on Me? How to know.

I’ve read that a Google tv and Lg tv along with Amazon Fire are notoriously insidious. I really don’t understand why they are pre installed. Seems like they might be able to control what apps work and which don’t. So I might accidentally buy a tv that doesn’t work with Apple casting? Can I just buy a smart tv without all the proprietary junk installed? Then again does any internet connection leave me vulnerable to spyware? Anyone with a 50” …

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