For the simplest and dumbest of reasons: Because I thought the image showed a TCL TV running Android, not one running the Roku software. That's how the image was labeled in our image bank. After Roku reached out to me over the weekend and convinced me we were using the wrong image, I changed it.
I have a TCL 43S405 model, a Roku model, and it definitely spies on you. I was watching a "Christmas Movie" on it through one of the HDMI ports that was hooked up to my laptop, running VLC media player. 20 minutes into the movie the menu system on the TV popped up in the corner showing me "Other ways to watch Christmas Movie...". This video file was played on my computer, not on the TV's OS. How the hell did it know what I was watching without sending video info lifted from the HDMI back to another server for analysis?!