I don't follow the latest in smart TVs but in a hotel environment it's not a stretch to think you're gonna be on common WIFI networks and the TVs will be connected to the networks to serve up ads/crapola or allow for people to hook up their laptops & streaming devices. And of course the hotel passwords and IT infrastructure will be of low level security.

You see people pranking each other all the time with insecure blue tooth headsets and chromecasts and such.