Yeah, that would definitely not go anywhere. Roku isn’t hacking into their device. OP probably bought a Roku Smart TV for like $75 (the cost is subsidized by Roku, hence why it’s so cheap) and is now complaining about it. It’s like buying an Amazon FireTV and then complaining about Amazon having control over the TV.
Edit: am I saying it’s right? No, but sometimes it pays to read the EULA. If you’re getting something for cheap, there’s probably a reason for it.