I have some ads, they're very easily ignorable, and at least usually revelent like an ad for a new game as it knows I use it to play the Xbox a lot. Not much of an inconvenience, people make out like it's internet pop up adds appearing while you try and watch something.
I have a Samsung smart TV that can't get any updates because the internal memory is full with apps, that I don't use and can't uninstall. Oh and I can't install any other apps except when I plug in an external USB flash drive.
Except from that and it being sluggish sometimes it's a breeze to use.