Problem is that there is at least one smart TV that gets stuck in a boot loop when it goes to update it's ads and can't. Support in that case tells them to connect to the internet and it'll work (which ofcourse will grab the new batch of ads). There are plenty of other cases with smart TVs losing actual functionality when the server that serves ads is blocked and because it's an updateable service you can't really tell which smart TV will sting you.