Re: Roll Your Own
Of course the smart TV can be used as a dumb TV for its lifetime though so it doesn't impact anything making it smart in theory.
My assumption is that there is almost no extra cost involved (a panel would still have to have HDMIs and the legacy connectors to make it useful as a media display anyway), and SW can be updated, even my Samsung got a few updates (mostly for picture improvements I think).
Never seen a (say) 60 inch lo-res panel for sale anyway so nothing to compare against.
Biting the hand that feeds IT
