Seriously who bothers with the crapware built into a tv anyway? Just use it as a dumb screen and attach other devices to it.
First, the user needs to know that "a cheap little computer" exists and can be connected to a TV. Walmart and Best Buy haven't been doing a good job of marketing these to the public. Second, the user needs the spare time to learn to administer yet another computer. Third, the user needs to be satisfied with some services limiting streams to 480p because a desktop computer running Linux and Firefox has a low "integrity level" in Widevine.